djvu | 428fdf094c58f6dd9eda7f6efafaddcb43b482940bdca405db4b62e3a65c3c95

Analysis

max time kernel
145s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
07/09/2024, 03:14

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General

Target
runner.exe
Size 790KB
Sample240907-dreg4ssbql
SHA256 428fdf094c58f6dd9eda7f6efafaddcb43b482940bdca405db4b62e3a65c3c95
MD5 afc84a8b4609d2df281fb3490e109bbd
SHA1 60e14e134728ddb00e519ce1097ee3abdee95459
SHA512 11c43645a8f7bd215dd5bcc76286aec7a309d030c83f33ab9903f734535fc376b01f545d05966a7e02c0e9ba4e962c573ad7c2320e03b2aa5adcbacf4136918a
SSDEEP 12288:2pV8ixHDVaVHqfEqpCet/A/k3i5trFvXUbmYTZ5qXxPezdE2vZ5d66gp9/:QmMKHqvt/A/kS/r9XitTZ4XtyZc
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://fresherlights.com/lancer/get.php

Attributes

extension
.bozq
offline_id
oHp5e4SJxdFtxfvKYmeX06F4C5cn0EcsF5Ak9Wt1
payload_url
http://uaery.top/dl/build2.exe

http://fresherlights.com/files/1/build3.exe
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-dyi5UcwIT9 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: 0597Jhyjd

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 16 IoCs

resource	yara_rule
behavioral2/memory/1504-2-0x00000000049D0000-0x0000000004AEB000-memory.dmp	family_djvu
behavioral2/memory/1772-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1772-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1772-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1772-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1772-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4512-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4512-26-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4512-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4512-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4512-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4512-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4512-41-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4512-40-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4512-42-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4512-43-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation	runner.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
3064	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\a989556f-6d23-4db6-9b96-a68fcc0385ec\\runner.exe\" --AutoStart"	runner.exe

Looks up external IP address via web service 4 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
7	api.2ip.ua
8	api.2ip.ua
19	api.2ip.ua
21	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1504 set thread context of 1772	1504	runner.exe	89
PID 2744 set thread context of 4512	2744	runner.exe	93

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	runner.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	runner.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	runner.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	runner.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1772	runner.exe
1772	runner.exe
4512	runner.exe
4512	runner.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1504 wrote to memory of 1772	1504	runner.exe	89
PID 1504 wrote to memory of 1772	1504	runner.exe	89
PID 1504 wrote to memory of 1772	1504	runner.exe	89
PID 1504 wrote to memory of 1772	1504	runner.exe	89
PID 1504 wrote to memory of 1772	1504	runner.exe	89
PID 1504 wrote to memory of 1772	1504	runner.exe	89
PID 1504 wrote to memory of 1772	1504	runner.exe	89
PID 1504 wrote to memory of 1772	1504	runner.exe	89
PID 1504 wrote to memory of 1772	1504	runner.exe	89
PID 1504 wrote to memory of 1772	1504	runner.exe	89
PID 1772 wrote to memory of 3064	1772	runner.exe	90
PID 1772 wrote to memory of 3064	1772	runner.exe	90
PID 1772 wrote to memory of 3064	1772	runner.exe	90
PID 1772 wrote to memory of 2744	1772	runner.exe	91
PID 1772 wrote to memory of 2744	1772	runner.exe	91
PID 1772 wrote to memory of 2744	1772	runner.exe	91
PID 2744 wrote to memory of 4512	2744	runner.exe	93
PID 2744 wrote to memory of 4512	2744	runner.exe	93
PID 2744 wrote to memory of 4512	2744	runner.exe	93
PID 2744 wrote to memory of 4512	2744	runner.exe	93
PID 2744 wrote to memory of 4512	2744	runner.exe	93
PID 2744 wrote to memory of 4512	2744	runner.exe	93
PID 2744 wrote to memory of 4512	2744	runner.exe	93
PID 2744 wrote to memory of 4512	2744	runner.exe	93
PID 2744 wrote to memory of 4512	2744	runner.exe	93
PID 2744 wrote to memory of 4512	2744	runner.exe	93

C:\Users\Admin\AppData\Local\Temp\runner.exe
"C:\Users\Admin\AppData\Local\Temp\runner.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1504
- C:\Users\Admin\AppData\Local\Temp\runner.exe
  "C:\Users\Admin\AppData\Local\Temp\runner.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1772
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\a989556f-6d23-4db6-9b96-a68fcc0385ec" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:3064
- - C:\Users\Admin\AppData\Local\Temp\runner.exe
    "C:\Users\Admin\AppData\Local\Temp\runner.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2744
  - - C:\Users\Admin\AppData\Local\Temp\runner.exe
      "C:\Users\Admin\AppData\Local\Temp\runner.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:4512

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

File and Directory Permissions Modification

T1222

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

8B2B9A00839EED1DFDCCC3BFC2F5DF12

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8B2B9A00839EED1DFDCCC3BFC2F5DF12
Size 1KB
SHA256 33a39e9ec2133230533a686ec43760026e014a3828c703707acbc150fe40fd6f
MD5 7fb5fa1534dcf77f2125b2403b30a0ee
SHA1 365d96812a69ac0a4611ea4b70a3f306576cc3ea
SHA512 a9279fd60505a1bfeef6fb07834cad0fd5be02fd405573fc1a5f59b991e9f88f5e81c32fe910f69bdc6585e71f02559895149eaf49c25b8ff955459fd60c0d2e
MD5 SHA1 SHA512

Submit Download

B46811C17859FFB409CF0E904A4AA8F8

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B46811C17859FFB409CF0E904A4AA8F8
Size 436B
SHA256 f157ed17fcaf8837fa82f8b69973848c9b10a02636848f995698212a08f31895
MD5 971c514f84bba0785f80aa1c23edfd79
SHA1 732acea710a87530c6b08ecdf32a110d254a54c8
SHA512 43dc1425d80e170c645a3e3bb56da8c3acd31bd637329e9e37094ac346ac85434df4edcdbefc05ae00aea33a80a88e2af695997a495611217fe6706075a63c58
MD5 SHA1 SHA512

Submit Download

8B2B9A00839EED1DFDCCC3BFC2F5DF12

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12
Size 174B
SHA256 9b149f1c454e94b2e7831205164a5cdda8dce01a3a559344de8817d3fd75f032
MD5 65ea523f6999e79b3e4b1cc98d386f98
SHA1 d8ca77481872d2cc39bb7968f333d34fda23d64b
SHA512 adbbdb0c01684c6e6340898257cc1e87c8afd7cf69fc265d6004edc80bf517ac976821fc26822557f5647563e512c3888013866d65951b16c498e5d496ac30c2
MD5 SHA1 SHA512

Submit Download

B46811C17859FFB409CF0E904A4AA8F8

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8
Size 170B
SHA256 00d371a222fd208ac758dd1914045b365176a69042be44e6d9025d83e0cf1c84
MD5 f5ddd6d1ee9e5776bcf2f28e39d26422
SHA1 462238dd217848d0fd979f60137d5c982e02d9df
SHA512 561e5ac2a87d6ab9309a870bb01b26d8454f8d7576372b16a94574254b96d99ebfbc34d3e3e53308c42db0a6ce51c17711d393e3f2f0355e03eb597b7b2d48cc
MD5 SHA1 SHA512

Submit Download

runner.exe

Path C:\Users\Admin\AppData\Local\a989556f-6d23-4db6-9b96-a68fcc0385ec\runner.exe
Size 790KB
SHA256 428fdf094c58f6dd9eda7f6efafaddcb43b482940bdca405db4b62e3a65c3c95
MD5 afc84a8b4609d2df281fb3490e109bbd
SHA1 60e14e134728ddb00e519ce1097ee3abdee95459
SHA512 11c43645a8f7bd215dd5bcc76286aec7a309d030c83f33ab9903f734535fc376b01f545d05966a7e02c0e9ba4e962c573ad7c2320e03b2aa5adcbacf4136918a
SSDEEP 12288:2pV8ixHDVaVHqfEqpCet/A/k3i5trFvXUbmYTZ5qXxPezdE2vZ5d66gp9/:QmMKHqvt/A/kS/r9XitTZ4XtyZc
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/1504-2-0x00000000049D0000-0x0000000004AEB000-memory.dmp

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memory/1504-1-0x0000000004930000-0x00000000049CC000-memory.dmp

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memory/1772-6-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1772-4-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1772-3-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1772-22-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1772-5-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4512-33-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4512-26-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4512-24-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4512-34-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4512-35-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4512-38-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4512-41-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4512-40-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4512-42-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4512-43-0x0000000000400000-0x0000000000537000-memory.dmp

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