djvu | 4465b2c67e0fa589fe083bf917f53fce72c39d2a0e34f7598d20d565394ca22b

General

Target

202409070d76c9ac68d551cd1ab4301e8d091bdestop.exe
Size

1.1MB
MD5

0d76c9ac68d551cd1ab4301e8d091bde
SHA1

7b1866e55134fe8e69219fc8f8a8e0f515716e22
SHA256

4465b2c67e0fa589fe083bf917f53fce72c39d2a0e34f7598d20d565394ca22b
SHA512

85078f3c03f6c9ec7d26750a19f4dec1ffcd70fe0ef4523f2e90f6a6a64a1abf761a5cc6bfdbe48bbba65a7be58d98244caf99d2a8eda1ef5e0101c77e64f3f0
SSDEEP

24576:ZBUIKn/vwOXGUXAjCymYZiVtElVIBT2roqnTSSxWeT/dRPOO8pWQHUq7:F0dwAYZt6C31WeTVRPOhp7Uq7

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://zexeq.com/test1/get.php

Attributes

extension
.cosw
offline_id
fTU4hYOJ0niv7WAg9utRTzxXv2TcoEvGPJhzIot1
payload_url
http://uaery.top/dl/build2.exe

http://zexeq.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-hhA4nKfJBj 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: 0658JOsie

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002346a-9.dat	family_djvu

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

Checks computer location settings 2 TTPs 2 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-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation	202409070d76c9ac68d551cd1ab4301e8d091bdestop.exe
Key value queried	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation	202409070d76c9ac68d551cd1ab4301e8d091bdestop.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
3600	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-1-5-21-786284298-625481688-3210388970-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\99bbf128-f77f-45cc-b42a-5367fc167595\\202409070d76c9ac68d551cd1ab4301e8d091bdestop.exe\" --AutoStart"	202409070d76c9ac68d551cd1ab4301e8d091bdestop.exe

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
19	api.2ip.ua
3	api.2ip.ua
4	api.2ip.ua

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 3 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	202409070d76c9ac68d551cd1ab4301e8d091bdestop.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	202409070d76c9ac68d551cd1ab4301e8d091bdestop.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3148	202409070d76c9ac68d551cd1ab4301e8d091bdestop.exe
3148	202409070d76c9ac68d551cd1ab4301e8d091bdestop.exe
1436	202409070d76c9ac68d551cd1ab4301e8d091bdestop.exe
1436	202409070d76c9ac68d551cd1ab4301e8d091bdestop.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3148 wrote to memory of 3600	3148	202409070d76c9ac68d551cd1ab4301e8d091bdestop.exe	85
PID 3148 wrote to memory of 3600	3148	202409070d76c9ac68d551cd1ab4301e8d091bdestop.exe	85
PID 3148 wrote to memory of 3600	3148	202409070d76c9ac68d551cd1ab4301e8d091bdestop.exe	85
PID 3148 wrote to memory of 1436	3148	202409070d76c9ac68d551cd1ab4301e8d091bdestop.exe	86
PID 3148 wrote to memory of 1436	3148	202409070d76c9ac68d551cd1ab4301e8d091bdestop.exe	86
PID 3148 wrote to memory of 1436	3148	202409070d76c9ac68d551cd1ab4301e8d091bdestop.exe	86

C:\Users\Admin\AppData\Local\Temp\202409070d76c9ac68d551cd1ab4301e8d091bdestop.exe
"C:\Users\Admin\AppData\Local\Temp\202409070d76c9ac68d551cd1ab4301e8d091bdestop.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3148
- C:\Windows\SysWOW64\icacls.exe
  icacls "C:\Users\Admin\AppData\Local\99bbf128-f77f-45cc-b42a-5367fc167595" /deny *S-1-1-0:(OI)(CI)(DE,DC)
  2⤵
  - Modifies file permissions
  - System Location Discovery: System Language Discovery
  PID:3600
- C:\Users\Admin\AppData\Local\Temp\202409070d76c9ac68d551cd1ab4301e8d091bdestop.exe
  "C:\Users\Admin\AppData\Local\Temp\202409070d76c9ac68d551cd1ab4301e8d091bdestop.exe" --Admin IsNotAutoStart IsNotTask
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:1436

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

File and Directory Permissions Modification

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8B2B9A00839EED1DFDCCC3BFC2F5DF12

Filesize
1KB

MD5
7fb5fa1534dcf77f2125b2403b30a0ee

SHA1
365d96812a69ac0a4611ea4b70a3f306576cc3ea

SHA256
33a39e9ec2133230533a686ec43760026e014a3828c703707acbc150fe40fd6f

SHA512
a9279fd60505a1bfeef6fb07834cad0fd5be02fd405573fc1a5f59b991e9f88f5e81c32fe910f69bdc6585e71f02559895149eaf49c25b8ff955459fd60c0d2e

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B46811C17859FFB409CF0E904A4AA8F8

Filesize
436B

MD5
971c514f84bba0785f80aa1c23edfd79

SHA1
732acea710a87530c6b08ecdf32a110d254a54c8

SHA256
f157ed17fcaf8837fa82f8b69973848c9b10a02636848f995698212a08f31895

SHA512
43dc1425d80e170c645a3e3bb56da8c3acd31bd637329e9e37094ac346ac85434df4edcdbefc05ae00aea33a80a88e2af695997a495611217fe6706075a63c58

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12

Filesize
174B

MD5
995877bb04dd0ee4265feb12e80ebd33

SHA1
a37ec3c44fa0d2a60a7a3fc68c64c8372d001c61

SHA256
9ed626d149d0e336fabb50f0deb7ee758e8253d45b2e2b677871b75dfdb2a6ef

SHA512
96f7321af9a1e617c93edc8178752f1a0300760493fa51b8e1415b25c4a2ca2c0d76f334a2f716b3d356ed4e93bce80241ff6c4d5ad2c6d4303b0437c035731f

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8

Filesize
170B

MD5
744fc3f8f2d8bdc9af0e1efd62515e5d

SHA1
ee411d9556da57c46a4f690625ac00645a77b56f

SHA256
2d817de2b05fa1832bb27dd04327df6d12887a9277e56d6a85b16005aca83ffd

SHA512
062eac5dccfdfa4a8a14ace1db1da899214fc4f5a7a034756ae1ca0c639e7e3f4798c2a47a5651bb8ee89c49cddd8462ef2aaebffb15e2a138db82a674c5888e

Download Submit
C:\Users\Admin\AppData\Local\99bbf128-f77f-45cc-b42a-5367fc167595\202409070d76c9ac68d551cd1ab4301e8d091bdestop.exe

Filesize
1.1MB

MD5
0d76c9ac68d551cd1ab4301e8d091bde

SHA1
7b1866e55134fe8e69219fc8f8a8e0f515716e22

SHA256
4465b2c67e0fa589fe083bf917f53fce72c39d2a0e34f7598d20d565394ca22b

SHA512
85078f3c03f6c9ec7d26750a19f4dec1ffcd70fe0ef4523f2e90f6a6a64a1abf761a5cc6bfdbe48bbba65a7be58d98244caf99d2a8eda1ef5e0101c77e64f3f0

Download Submit
C:\Users\Admin\AppData\Local\bowsakkdestx.txt

Filesize
449B

MD5
caa078f0348cda98328127c142e3bfed

SHA1
e38274d642c806a3affcca8f7e37b61f591c47e6

SHA256
91faeb982f34313750a83d74c5464abe4e01357d1a7ea4253973509bc0e9d219

SHA512
2e6a5c482b5226079c6b4bd9a706537c372a3b43962f64be6bdd281e3217f963316ef0eba38164890bdf14af6558eb26605320487f0a0c841be9bb813c2ee5d6

Download Submit
C:\Users\Admin\AppData\Local\ebff500a-93e0-4716-bd89-0068dc2b6c8b\build3.exe

Filesize
437B

MD5
6910426a598bc0b07dd6ca7c2faf5c22

SHA1
4304d65a08652b167453997e1464cc6ef034be23

SHA256
ebfef207462c29030b8a06068c8cbf1cfeae1304813b9cdbfa2d705b314bf692

SHA512
5e96757fa5daa336968aa07d5fe5525040a081a547dd6bad55bed4539ad76b3f96aabd38f461efdafa4a427963b2a3187cc40dfa60c74e6c6ddf738176381952

Download Submit

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads