Analysis
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max time kernel
144s -
max time network
123s -
platform
windows10-2004_x64 -
resource
win10v2004-20230220-en -
resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system -
submitted
05-06-2023 00:57
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
file.exe
Resource
win10v2004-20230220-en
General
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Target
file.exe
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Size
779KB
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MD5
2c672083cd017a7b9d144cc4d7023be9
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SHA1
c919b7257efc8b55066c69abf22ba1176d8fa94c
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SHA256
e2d46d2b425da9d93663333937e8c28c5464a4daaf3e6c59ca0bbcf4478160ce
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SHA512
98dbed105d1043b2605839f0e3840b82cf34823d931b3adae9853b76614f9ebc839e760cc19aa31029dc7605a64bb2b8d15cc6e82b4a87ccc180d185811800e1
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SSDEEP
24576:dZIrvnjQEMFjPelfkXsl4YHOZGgOnblTv:dZIrf0EMMl8clNOZGgOnB
Malware Config
Extracted
djvu
http://zexeq.com/test1/get.php
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extension
.nerz
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offline_id
0vTA6MA1m5nzrdffOCJC7YmAa4Lp6YNN8lOJ4mt1
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payload_url
http://colisumy.com/dl/build2.exe
http://zexeq.com/files/1/build3.exe
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ransomnote
ATTENTION! Don't worry, you can return all your files! All your files like pictures, databases, documents and other important are encrypted with strongest encryption and unique key. The only method of recovering files is to purchase decrypt tool and unique key for you. This software will decrypt all your encrypted files. What guarantees you have? You can send one of your encrypted file from your PC and we decrypt it for free. But we can decrypt only 1 file for free. File must not contain valuable information. You can get and look video overview decrypt tool: https://we.tl/t-vc50LyB2yb Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. Please note that you'll never restore your data without payment. Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours. To get this software you need write on our e-mail: [email protected] Reserve e-mail address to contact us: [email protected] Your personal ID: 0722JOsie
Extracted
vidar
4.1
77a63e71a10ee1d81a28b5c866b75922
https://steamcommunity.com/profiles/76561199510444991
https://t.me/task4manager
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profile_id_v2
77a63e71a10ee1d81a28b5c866b75922
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user_agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/112.0.0.0 Safari/537.36 Edg/112.0.1722.34
Signatures
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Detected Djvu ransomware 15 IoCs
resource yara_rule behavioral2/memory/1772-134-0x0000000004AC0000-0x0000000004BDB000-memory.dmp family_djvu behavioral2/memory/2844-135-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2844-136-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2844-137-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2844-138-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2844-147-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1108-151-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1108-152-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1108-157-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1108-159-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1108-163-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1108-168-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1108-169-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1108-204-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1108-281-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu -
Djvu Ransomware
Ransomware which is a variant of the STOP family.
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Downloads MZ/PE file
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Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Control Panel\International\Geo\Nation file.exe Key value queried \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Control Panel\International\Geo\Nation file.exe -
Executes dropped EXE 4 IoCs
pid Process 3668 build2.exe 4084 build2.exe 3328 build3.exe 3860 mstsca.exe -
Loads dropped DLL 2 IoCs
pid Process 4084 build2.exe 4084 build2.exe -
Modifies file permissions 1 TTPs 1 IoCs
pid Process 4008 icacls.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
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Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\0c7ce4fe-a806-43a6-9afd-dc7a34b03b34\\file.exe\" --AutoStart" file.exe -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 9 api.2ip.ua 10 api.2ip.ua 27 api.2ip.ua -
Suspicious use of SetThreadContext 3 IoCs
description pid Process procid_target PID 1772 set thread context of 2844 1772 file.exe 85 PID 4608 set thread context of 1108 4608 file.exe 89 PID 3668 set thread context of 4084 3668 build2.exe 91 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 build2.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString build2.exe -
Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 2268 schtasks.exe 4800 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 2844 file.exe 2844 file.exe 1108 file.exe 1108 file.exe 4084 build2.exe 4084 build2.exe -
Suspicious use of WriteProcessMemory 47 IoCs
description pid Process procid_target PID 1772 wrote to memory of 2844 1772 file.exe 85 PID 1772 wrote to memory of 2844 1772 file.exe 85 PID 1772 wrote to memory of 2844 1772 file.exe 85 PID 1772 wrote to memory of 2844 1772 file.exe 85 PID 1772 wrote to memory of 2844 1772 file.exe 85 PID 1772 wrote to memory of 2844 1772 file.exe 85 PID 1772 wrote to memory of 2844 1772 file.exe 85 PID 1772 wrote to memory of 2844 1772 file.exe 85 PID 1772 wrote to memory of 2844 1772 file.exe 85 PID 1772 wrote to memory of 2844 1772 file.exe 85 PID 2844 wrote to memory of 4008 2844 file.exe 86 PID 2844 wrote to memory of 4008 2844 file.exe 86 PID 2844 wrote to memory of 4008 2844 file.exe 86 PID 2844 wrote to memory of 4608 2844 file.exe 87 PID 2844 wrote to memory of 4608 2844 file.exe 87 PID 2844 wrote to memory of 4608 2844 file.exe 87 PID 4608 wrote to memory of 1108 4608 file.exe 89 PID 4608 wrote to memory of 1108 4608 file.exe 89 PID 4608 wrote to memory of 1108 4608 file.exe 89 PID 4608 wrote to memory of 1108 4608 file.exe 89 PID 4608 wrote to memory of 1108 4608 file.exe 89 PID 4608 wrote to memory of 1108 4608 file.exe 89 PID 4608 wrote to memory of 1108 4608 file.exe 89 PID 4608 wrote to memory of 1108 4608 file.exe 89 PID 4608 wrote to memory of 1108 4608 file.exe 89 PID 4608 wrote to memory of 1108 4608 file.exe 89 PID 1108 wrote to memory of 3668 1108 file.exe 90 PID 1108 wrote to memory of 3668 1108 file.exe 90 PID 1108 wrote to memory of 3668 1108 file.exe 90 PID 3668 wrote to memory of 4084 3668 build2.exe 91 PID 3668 wrote to memory of 4084 3668 build2.exe 91 PID 3668 wrote to memory of 4084 3668 build2.exe 91 PID 3668 wrote to memory of 4084 3668 build2.exe 91 PID 3668 wrote to memory of 4084 3668 build2.exe 91 PID 3668 wrote to memory of 4084 3668 build2.exe 91 PID 3668 wrote to memory of 4084 3668 build2.exe 91 PID 3668 wrote to memory of 4084 3668 build2.exe 91 PID 3668 wrote to memory of 4084 3668 build2.exe 91 PID 1108 wrote to memory of 3328 1108 file.exe 95 PID 1108 wrote to memory of 3328 1108 file.exe 95 PID 1108 wrote to memory of 3328 1108 file.exe 95 PID 3328 wrote to memory of 2268 3328 build3.exe 96 PID 3328 wrote to memory of 2268 3328 build3.exe 96 PID 3328 wrote to memory of 2268 3328 build3.exe 96 PID 3860 wrote to memory of 4800 3860 mstsca.exe 103 PID 3860 wrote to memory of 4800 3860 mstsca.exe 103 PID 3860 wrote to memory of 4800 3860 mstsca.exe 103
Processes
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C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1772 -
C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2844 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\0c7ce4fe-a806-43a6-9afd-dc7a34b03b34" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:4008
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C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4608 -
C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1108 -
C:\Users\Admin\AppData\Local\01294fed-f0b4-4ac8-ac74-0316a4a038dd\build2.exe"C:\Users\Admin\AppData\Local\01294fed-f0b4-4ac8-ac74-0316a4a038dd\build2.exe"5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3668 -
C:\Users\Admin\AppData\Local\01294fed-f0b4-4ac8-ac74-0316a4a038dd\build2.exe"C:\Users\Admin\AppData\Local\01294fed-f0b4-4ac8-ac74-0316a4a038dd\build2.exe"6⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:4084
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C:\Users\Admin\AppData\Local\01294fed-f0b4-4ac8-ac74-0316a4a038dd\build3.exe"C:\Users\Admin\AppData\Local\01294fed-f0b4-4ac8-ac74-0316a4a038dd\build3.exe"5⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:3328 -
C:\Windows\SysWOW64\schtasks.exe/C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe"6⤵
- Creates scheduled task(s)
PID:2268
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C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exeC:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:3860 -
C:\Windows\SysWOW64\schtasks.exe/C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe"2⤵
- Creates scheduled task(s)
PID:4800
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
593KB
MD5c8fd9be83bc728cc04beffafc2907fe9
SHA195ab9f701e0024cedfbd312bcfe4e726744c4f2e
SHA256ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a
SHA512fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040
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Filesize
2.0MB
MD51cc453cdf74f31e4d913ff9c10acdde2
SHA16e85eae544d6e965f15fa5c39700fa7202f3aafe
SHA256ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5
SHA512dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
Filesize2KB
MD572cce08db064d193dd1c8db96e30a0e7
SHA1a76ef6bbfb2cadde26e7d713e9a71a8818d68991
SHA256e904584bfbd2b92b1b9063f660abbe337c58e623ca78df5107f036d272d66c38
SHA512e1d719a6a5d446c2b3348930cfcea61f85cff76adc38948dfb144aa7f95eac5453d7787706bca70ce75de931724cff7e6e146f9b662e34eb36d948995fbca1f4
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
Filesize1KB
MD564f0d4d6d9cc00bf4f809cd784078196
SHA10526f2645201510649d253f2d07194de430cab0d
SHA2568b379783bfca35e7cb6828accb1dc18fc022dc8b4159ced8534b95943bf41457
SHA512773f2b5f876f56237ef7ed2f5c7a558c3b46514b23a1ddf7028c4a796745c78738cff869016e6d616fec7df66a0d54e9e3f1c6bcaa8888b5b68d30cdb91fda17
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
Filesize488B
MD581080ffa797ad31f0d6f23a4febcf213
SHA1c7dcb34a26482ac9c75958ce31b0acbbe0c6d4a7
SHA256273ef2fc0c455465e88adc4af77673c3e416fd92e479e9a6e5cf3b21a8097978
SHA512de64ba6e9ead07fee87e5a5d33858bdd7c96068903100b95a9a8e8f141df865d431377a50696af9288a5fb780729ff42c834b25f7bc7ceff05f77fdea42d578e
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
Filesize482B
MD56f3443be8822b518e38886803d766ebd
SHA1785683b94c75173fb14e8110592b5bddd5413d5d
SHA2564d4c2fefdbdcd770b3b9b5d7fb655006a5e23d3882f58dc2c565c18a542c228b
SHA512923b0772b4052889b4752150601da7dd8cab33b194f45fd6fc8c8e9c1db926fdde8aca887754ac0ad836bbdca7460402d7b26265cdca2bb440884b547695ac5d
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Filesize
437KB
MD504197441a29753c237bc0c285082c0d8
SHA1463462810a45452d6e91364ae7858263437648dd
SHA256692fe3aca06ef0e1582fcf692dfd0e2e38e1b542368848318e0095a8f85f3d77
SHA51291456197c3d88bcf52ce557690751fe9d7b5b90c92313e00a11c7af75bdddf92623b26f7fa70c72df6083221010556052d366dcc45d091e46d8dfda585297a05
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Filesize
437KB
MD504197441a29753c237bc0c285082c0d8
SHA1463462810a45452d6e91364ae7858263437648dd
SHA256692fe3aca06ef0e1582fcf692dfd0e2e38e1b542368848318e0095a8f85f3d77
SHA51291456197c3d88bcf52ce557690751fe9d7b5b90c92313e00a11c7af75bdddf92623b26f7fa70c72df6083221010556052d366dcc45d091e46d8dfda585297a05
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Filesize
437KB
MD504197441a29753c237bc0c285082c0d8
SHA1463462810a45452d6e91364ae7858263437648dd
SHA256692fe3aca06ef0e1582fcf692dfd0e2e38e1b542368848318e0095a8f85f3d77
SHA51291456197c3d88bcf52ce557690751fe9d7b5b90c92313e00a11c7af75bdddf92623b26f7fa70c72df6083221010556052d366dcc45d091e46d8dfda585297a05
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Filesize
437KB
MD504197441a29753c237bc0c285082c0d8
SHA1463462810a45452d6e91364ae7858263437648dd
SHA256692fe3aca06ef0e1582fcf692dfd0e2e38e1b542368848318e0095a8f85f3d77
SHA51291456197c3d88bcf52ce557690751fe9d7b5b90c92313e00a11c7af75bdddf92623b26f7fa70c72df6083221010556052d366dcc45d091e46d8dfda585297a05
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Filesize
9KB
MD59ead10c08e72ae41921191f8db39bc16
SHA1abe3bce01cd34afc88e2c838173f8c2bd0090ae1
SHA2568d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0
SHA512aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a
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Filesize
9KB
MD59ead10c08e72ae41921191f8db39bc16
SHA1abe3bce01cd34afc88e2c838173f8c2bd0090ae1
SHA2568d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0
SHA512aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a
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Filesize
9KB
MD59ead10c08e72ae41921191f8db39bc16
SHA1abe3bce01cd34afc88e2c838173f8c2bd0090ae1
SHA2568d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0
SHA512aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a
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Filesize
779KB
MD52c672083cd017a7b9d144cc4d7023be9
SHA1c919b7257efc8b55066c69abf22ba1176d8fa94c
SHA256e2d46d2b425da9d93663333937e8c28c5464a4daaf3e6c59ca0bbcf4478160ce
SHA51298dbed105d1043b2605839f0e3840b82cf34823d931b3adae9853b76614f9ebc839e760cc19aa31029dc7605a64bb2b8d15cc6e82b4a87ccc180d185811800e1
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Filesize
9KB
MD59ead10c08e72ae41921191f8db39bc16
SHA1abe3bce01cd34afc88e2c838173f8c2bd0090ae1
SHA2568d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0
SHA512aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a
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Filesize
9KB
MD59ead10c08e72ae41921191f8db39bc16
SHA1abe3bce01cd34afc88e2c838173f8c2bd0090ae1
SHA2568d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0
SHA512aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a