djvu | 53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94

Analysis

max time kernel
293s
max time network
153s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
07/05/2024, 22:52

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe
Size 765KB
Sample240507-2thvbace6t
SHA256 53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94
MD5 2531638a30fdddc814506d0837313313
SHA1 474f871ff088c61d4157763144b04592dfff533d
SHA512 b877608d1c32fb580de2faa15fc33de74eead9da8cb202d7a2cd87c4962478efb216d9e51163b0e2919c968ede04e15abb5f200768b76bbb0996ecdbb4ec0c29
SSDEEP 12288:USaDWZ31Zk1XAeMQWYsX68cyXtTbXStoCBBL28M19lMHkHehJj2:UzW5121j9fs7cqTbX8B66HOeh5
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

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

Attributes

extension
.qepi
offline_id
jgILOjDrBgyzY4JmT3B2jDSyBmDPBruKk8bKs6t1
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/665ddae3fc3cd10bbaaa4350408b196920240504141005/4cae7e 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: 0867PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 12 IoCs

resource	yara_rule
behavioral1/memory/1920-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1920-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1920-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1920-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2472-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2472-45-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2472-46-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2472-47-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2472-50-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2472-52-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2472-53-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2472-54-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

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

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2860	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-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\4ac45bc8-e805-4adc-90a4-91f668c782d2\\53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe\" --AutoStart"	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.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
3	api.2ip.ua
4	api.2ip.ua
9	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2188 set thread context of 1920	2188	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	28
PID 2448 set thread context of 2472	2448	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	31

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1920	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe
2472	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe
2472	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2188 wrote to memory of 1920	2188	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	28
PID 2188 wrote to memory of 1920	2188	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	28
PID 2188 wrote to memory of 1920	2188	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	28
PID 2188 wrote to memory of 1920	2188	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	28
PID 2188 wrote to memory of 1920	2188	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	28
PID 2188 wrote to memory of 1920	2188	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	28
PID 2188 wrote to memory of 1920	2188	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	28
PID 2188 wrote to memory of 1920	2188	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	28
PID 2188 wrote to memory of 1920	2188	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	28
PID 2188 wrote to memory of 1920	2188	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	28
PID 2188 wrote to memory of 1920	2188	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	28
PID 1920 wrote to memory of 2860	1920	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	29
PID 1920 wrote to memory of 2860	1920	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	29
PID 1920 wrote to memory of 2860	1920	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	29
PID 1920 wrote to memory of 2860	1920	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	29
PID 1920 wrote to memory of 2448	1920	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	30
PID 1920 wrote to memory of 2448	1920	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	30
PID 1920 wrote to memory of 2448	1920	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	30
PID 1920 wrote to memory of 2448	1920	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	30
PID 2448 wrote to memory of 2472	2448	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	31
PID 2448 wrote to memory of 2472	2448	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	31
PID 2448 wrote to memory of 2472	2448	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	31
PID 2448 wrote to memory of 2472	2448	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	31
PID 2448 wrote to memory of 2472	2448	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	31
PID 2448 wrote to memory of 2472	2448	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	31
PID 2448 wrote to memory of 2472	2448	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	31
PID 2448 wrote to memory of 2472	2448	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	31
PID 2448 wrote to memory of 2472	2448	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	31
PID 2448 wrote to memory of 2472	2448	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	31
PID 2448 wrote to memory of 2472	2448	53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe	31

C:\Users\Admin\AppData\Local\Temp\53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe
"C:\Users\Admin\AppData\Local\Temp\53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2188
- C:\Users\Admin\AppData\Local\Temp\53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe
  "C:\Users\Admin\AppData\Local\Temp\53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1920
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\4ac45bc8-e805-4adc-90a4-91f668c782d2" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:2860
- - C:\Users\Admin\AppData\Local\Temp\53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe
    "C:\Users\Admin\AppData\Local\Temp\53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2448
  - - C:\Users\Admin\AppData\Local\Temp\53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe
      "C:\Users\Admin\AppData\Local\Temp\53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:2472

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

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Size 1KB
SHA256 26f7df2742be7eae0cecb3954ab69d2f1ad25c6b63a21e3a477ea34dee8301ae
MD5 af14424bd91fa356e225129fe451aacc
SHA1 4046dc95051bf8382196ff1fec36326c22dc1aae
SHA512 362068ce189ee00c318b574ebc8fc4f2e09add21f6c79aea8fe2f69ece44c0beaeb6c7fec7297a0b758ea5b8879ab0e9993c74ab262e200e289c05833e734179
MD5 SHA1 SHA512

Submit Download

CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Size 724B
SHA256 58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5
MD5 8202a1cd02e7d69597995cabbe881a12
SHA1 8858d9d934b7aa9330ee73de6c476acf19929ff6
SHA512 97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9
MD5 SHA1 SHA512

Submit Download

24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Size 410B
SHA256 fb33f4d5047204582e956cc1d555cf62e1a7eec28671147666020898731b482b
MD5 59fc9c690de63128c667622dd3daaf7e
SHA1 47e16f822898bc3ea9ecbb0444c1cd1c79a26beb
SHA512 330f6b14ccfde02664155416b639c1d04772e45303e417eddb3a01696edf80cd5100a1604cd8cda1b2029669a7ce6a238ee287ed6c968cd988f7a98f2f8d4384
MD5 SHA1 SHA512

Submit Download

94308059B57B3142E455B38A6EB92015

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Size 344B
SHA256 7c4abde640f315dbe695e582133a7834c57b0149c1d71a2f8ce9f8f462c0ba3e
MD5 9c26204b2ec9133ced5f5233b547c09c
SHA1 b6bce7b6456c6427f081a73b811e92891db976b4
SHA512 5f62ec87a6e3b767de19d279bce207215a2b94e4cc8d7959ec71c19c893df7533c559476e2b5e93526d165e0fee3910642ef089939e48ae1744b31755886c0fc
MD5 SHA1 SHA512

Submit Download

CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Size 392B
SHA256 064d44bed027f4e0dac39e0b38319516a7c24cfae2038d528c8412f3903e4320
MD5 e53157980c034a112b7486392d467e65
SHA1 099a6aaebdded7d95e361e77dbfe196ecb16c08e
SHA512 eac26533fe0cabdcbcc3573a0ca855021735828633f516a62e335eb47b6fc595fe290391356aceb080067fa0e35937ef13f0e757ecf0323199b6be1c70e69aaa
MD5 SHA1 SHA512

Submit Download

53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe

Path C:\Users\Admin\AppData\Local\4ac45bc8-e805-4adc-90a4-91f668c782d2\53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94.exe
Size 765KB
SHA256 53dc043119c9a37def26ea07e0eb9e554837da0d9abe1b16605e43df211adb94
MD5 2531638a30fdddc814506d0837313313
SHA1 474f871ff088c61d4157763144b04592dfff533d
SHA512 b877608d1c32fb580de2faa15fc33de74eead9da8cb202d7a2cd87c4962478efb216d9e51163b0e2919c968ede04e15abb5f200768b76bbb0996ecdbb4ec0c29
SSDEEP 12288:USaDWZ31Zk1XAeMQWYsX68cyXtTbXStoCBBL28M19lMHkHehJj2:UzW5121j9fs7cqTbX8B66HOeh5
MD5 SHA1 SHA512 SSDEEP

Submit Download

Cab1738.tmp

Path C:\Users\Admin\AppData\Local\Temp\Cab1738.tmp
Size 65KB
SHA256 c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d
MD5 ac05d27423a85adc1622c714f2cb6184
SHA1 b0fe2b1abddb97837ea0195be70ab2ff14d43198
SHA512 6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d
SSDEEP 1536:drFvD2YSE/sFDqV0FJJynkAhftCvMd3coa282frgW1qgNzU:drVDJSeaDqV0FJwLhVkr282fF5U
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/1920-8-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/1920-6-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/1920-28-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/1920-4-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/1920-2-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Download

memory/2188-1-0x0000000000220000-0x00000000002B2000-memory.dmp

Download

memory/2188-7-0x0000000002B80000-0x0000000002C9B000-memory.dmp

Download

memory/2188-0-0x0000000000220000-0x00000000002B2000-memory.dmp

Download

memory/2448-29-0x0000000000300000-0x0000000000392000-memory.dmp

Download

memory/2472-32-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/2472-45-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/2472-46-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/2472-47-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/2472-50-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/2472-52-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/2472-53-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/2472-54-0x0000000000400000-0x0000000000537000-memory.dmp

Download