djvu | f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748

General

Target

f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe
Size

712KB
MD5

c92a00eaa04e468e05cda7ceefde78f9
SHA1

c8e97bbf322fe5c172bdbf73ad3bb8f0d1e71cec
SHA256

f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748
SHA512

ba008253b3d77b43828bc3a548ace5c5ca4963ee20f85af0ce1d6bc91cb02aa76ba3d5413f82b684ddaede2e002ece4fb1c4d88bc7fa92187448093e5c06b190
SSDEEP

12288:Kb3QysPnlgbUwq3p0pgNFJT+/9OeRY+O7xOQbRRiJ+uBbWIWzn2az7ExI:K8Xlkqipa+ldY/T0rXWtvl

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.bgjs
offline_id
Z6iwSvCoAt8T8K2ROxecuXHPNHv7eDyWrc8Ks7t1
payload_url
http://sdfjhuz.com/dl/build2.exe

http://cajgtus.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. Do not ask assistants from youtube and recovery data sites for help in recovering your data. They can use your free decryption quota and scam you. Our contact is emails in this text document only. You can get and look video overview decrypt tool: https://wetransfer.com/downloads/54cdfd152fe98eedb628a1f4ddb7076420240421150208/403a27 Price of private key and decrypt software is $999. Discount 50% available if you contact us first 72 hours, that's price for you is $499. 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: 0863PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 16 IoCs

resource	yara_rule
behavioral1/memory/4188-2-0x0000000004A30000-0x0000000004B4B000-memory.dmp	family_djvu
behavioral1/memory/4052-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4052-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4052-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4052-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4052-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4400-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4400-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4400-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4400-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4400-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4400-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4400-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4400-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4400-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4400-37-0x0000000000400000-0x0000000000537000-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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
4812	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-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\719f4617-5c54-47c1-9221-c73a04e6f57e\\f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe\" --AutoStart"	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.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
29	api.2ip.ua
30	api.2ip.ua
52	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4188 set thread context of 4052	4188	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe	97
PID 2596 set thread context of 4400	2596	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe	103

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4052	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe
4052	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe
4400	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe
4400	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4188 wrote to memory of 4052	4188	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe	97
PID 4188 wrote to memory of 4052	4188	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe	97
PID 4188 wrote to memory of 4052	4188	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe	97
PID 4188 wrote to memory of 4052	4188	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe	97
PID 4188 wrote to memory of 4052	4188	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe	97
PID 4188 wrote to memory of 4052	4188	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe	97
PID 4188 wrote to memory of 4052	4188	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe	97
PID 4188 wrote to memory of 4052	4188	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe	97
PID 4188 wrote to memory of 4052	4188	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe	97
PID 4188 wrote to memory of 4052	4188	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe	97
PID 4052 wrote to memory of 4812	4052	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe	99
PID 4052 wrote to memory of 4812	4052	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe	99
PID 4052 wrote to memory of 4812	4052	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe	99
PID 4052 wrote to memory of 2596	4052	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe	100
PID 4052 wrote to memory of 2596	4052	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe	100
PID 4052 wrote to memory of 2596	4052	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe	100
PID 2596 wrote to memory of 4400	2596	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe	103
PID 2596 wrote to memory of 4400	2596	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe	103
PID 2596 wrote to memory of 4400	2596	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe	103
PID 2596 wrote to memory of 4400	2596	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe	103
PID 2596 wrote to memory of 4400	2596	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe	103
PID 2596 wrote to memory of 4400	2596	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe	103
PID 2596 wrote to memory of 4400	2596	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe	103
PID 2596 wrote to memory of 4400	2596	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe	103
PID 2596 wrote to memory of 4400	2596	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe	103
PID 2596 wrote to memory of 4400	2596	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe	103

C:\Users\Admin\AppData\Local\Temp\f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe
"C:\Users\Admin\AppData\Local\Temp\f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4188
- C:\Users\Admin\AppData\Local\Temp\f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe
  "C:\Users\Admin\AppData\Local\Temp\f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4052
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\719f4617-5c54-47c1-9221-c73a04e6f57e" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:4812
- - C:\Users\Admin\AppData\Local\Temp\f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe
    "C:\Users\Admin\AppData\Local\Temp\f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2596
  - - C:\Users\Admin\AppData\Local\Temp\f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe
      "C:\Users\Admin\AppData\Local\Temp\f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:4400

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4072 --field-trial-handle=2272,i,4858140932023865871,5726683989663339295,262144 --variations-seed-version /prefetch:8
1⤵
PID:3152

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Filesize
1KB

MD5
6007ca6192acc48214149185effd485e

SHA1
9e1bd79f873aa5bd113e6d1f3fd30078478f3239

SHA256
19d440e3d197437fa64e98ffd71ab3eae51f107c438b25fe712bbc92491d5af7

SHA512
ce79184486b1b9da0b1ed9564b89a3641fbd593ea34f303f6fd50e9b3b6f66ccebb824f71ea229af04248fd64f4bc48b65cff61af5beaf8533f6c3475aa235a8

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Filesize
724B

MD5
8202a1cd02e7d69597995cabbe881a12

SHA1
8858d9d934b7aa9330ee73de6c476acf19929ff6

SHA256
58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5

SHA512
97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Filesize
410B

MD5
f90e8d377b06be19eeb4597dc9b4cc12

SHA1
2a4d0a931600d72408be660fe18063dba62a7d97

SHA256
94f958df77a40c6ef08a9d52208148d3cb15820ceb107415fac21e2bd81d3529

SHA512
230514edc6d0f72bd06250a6fca390ea5589496c7b0f9cf1a64eb883e92592e9c72e3cc51f446c2e52910660790adbeea87e7f1d9014ecb0a6150890e71b27f7

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Filesize
392B

MD5
54c1c750e24b82b304d2d18c9b7fd2df

SHA1
ff66f41b8884ed1160680878aff26d2d9c0876c6

SHA256
e9d4c15c6889b5459b016a1cd97f7c3d7c6a53827536ac6f0dbd58e43f6c320e

SHA512
e03c8e472bb5ae3915951a8ccf89f1840e742ea8f6fa1cc1a51b89446f4dc4711867346eaa4be89c3ff7962568714667b6c7cae9dc3e9220239ff14b5ba18c10

Download Submit
C:\Users\Admin\AppData\Local\719f4617-5c54-47c1-9221-c73a04e6f57e\f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe

Filesize
712KB

MD5
c92a00eaa04e468e05cda7ceefde78f9

SHA1
c8e97bbf322fe5c172bdbf73ad3bb8f0d1e71cec

SHA256
f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748

SHA512
ba008253b3d77b43828bc3a548ace5c5ca4963ee20f85af0ce1d6bc91cb02aa76ba3d5413f82b684ddaede2e002ece4fb1c4d88bc7fa92187448093e5c06b190

Download Submit
memory/4052-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4052-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4052-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4052-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4052-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4188-1-0x0000000003020000-0x00000000030C0000-memory.dmp

Filesize
640KB

Download
memory/4188-2-0x0000000004A30000-0x0000000004B4B000-memory.dmp

Filesize
1.1MB

Download
memory/4400-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4400-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4400-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4400-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4400-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4400-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4400-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4400-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4400-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4400-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads