djvu | f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c

General

Target
f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe
Size 702KB
Sample230331-s3ysfsbb55
SHA256 f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c
MD5 e5a01ac0fdc56bedef4e05c92a6d0f18
SHA1 59717771b834d04bf8b90112623b15774b69549d
SHA512 d0ee6acff372030d7484af8445ad21613c4d42fee69c1dfc1d0fa9dcfea31fef2d7c757b46823f32f658d5eebb5c95c8015dc8a967b9a048413fbb493e2b4034
SSDEEP 12288:xk1AVJcXNVKGEniSGDXk9AkdzvJDIsFH3JdXEB9qSBerPKXPeQ:42c9v4iSikfTDIIZd0B9qJPKXPf
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.jycx
offline_id
MEMHlobHgXqvmTWaMsLcwGZhDOd00bblO1yevst1
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-fkW8qLaCVQ 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: 0674JOsie

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 7 IoCs

resource	yara_rule
behavioral1/memory/2496-134-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2496-135-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/324-136-0x0000000002740000-0x000000000285B000-memory.dmp	family_djvu
behavioral1/memory/2496-137-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2496-140-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2496-154-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2496-157-0x0000000000400000-0x0000000000537000-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-1-5-21-2805025096-2326403612-4231045514-1000\Control Panel\International\Geo\Nation	f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
3912	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\89734b94-1474-48f1-b839-966ca176633e\\f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe\" --AutoStart"	f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe

Looks up external IP address via web service 2 IoCs

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

flow	ioc
33	api.2ip.ua
34	api.2ip.ua

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 324 set thread context of 2496	324	f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe	80

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

System Information Discovery
T1082

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1130

Modify Registry

T1112

description	ioc	Process
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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	f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349	f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2496	f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe
2496	f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 324 wrote to memory of 2496	324	f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe	80
PID 324 wrote to memory of 2496	324	f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe	80
PID 324 wrote to memory of 2496	324	f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe	80
PID 324 wrote to memory of 2496	324	f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe	80
PID 324 wrote to memory of 2496	324	f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe	80
PID 324 wrote to memory of 2496	324	f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe	80
PID 324 wrote to memory of 2496	324	f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe	80
PID 324 wrote to memory of 2496	324	f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe	80
PID 324 wrote to memory of 2496	324	f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe	80
PID 324 wrote to memory of 2496	324	f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe	80
PID 2496 wrote to memory of 3912	2496	f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe	82
PID 2496 wrote to memory of 3912	2496	f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe	82
PID 2496 wrote to memory of 3912	2496	f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe	82
PID 2496 wrote to memory of 1672	2496	f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe	86
PID 2496 wrote to memory of 1672	2496	f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe	86
PID 2496 wrote to memory of 1672	2496	f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe	86

C:\Users\Admin\AppData\Local\Temp\f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe
"C:\Users\Admin\AppData\Local\Temp\f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:324
- C:\Users\Admin\AppData\Local\Temp\f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe
  "C:\Users\Admin\AppData\Local\Temp\f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Modifies system certificate store
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2496
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\89734b94-1474-48f1-b839-966ca176633e" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:3912
- - C:\Users\Admin\AppData\Local\Temp\f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe
    "C:\Users\Admin\AppData\Local\Temp\f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    PID:1672

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

File and Directory Permissions Modification

1

T1222

Install Root Certificate

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe

Path C:\Users\Admin\AppData\Local\89734b94-1474-48f1-b839-966ca176633e\f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe
Size 702KB
SHA256 f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c
MD5 e5a01ac0fdc56bedef4e05c92a6d0f18
SHA1 59717771b834d04bf8b90112623b15774b69549d
SHA512 d0ee6acff372030d7484af8445ad21613c4d42fee69c1dfc1d0fa9dcfea31fef2d7c757b46823f32f658d5eebb5c95c8015dc8a967b9a048413fbb493e2b4034
SSDEEP 12288:xk1AVJcXNVKGEniSGDXk9AkdzvJDIsFH3JdXEB9qSBerPKXPeQ:42c9v4iSikfTDIIZd0B9qJPKXPf
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/324-136-0x0000000002740000-0x000000000285B000-memory.dmp

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memory/2496-134-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2496-135-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2496-137-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2496-140-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2496-154-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2496-157-0x0000000000400000-0x0000000000537000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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