djvu | 78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe

General

Target

78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe
Size

774KB
MD5

5b14f1bfbc29a60b38ba51486799d5f5
SHA1

cf0e44b5e5368667d47b13d8e88497343779d20f
SHA256

78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe
SHA512

acb6f8cf49827a02da12897eacf5bfadd484f80f1c199e069c61a267a2e7dd8c8126250adbf9658741c23f3ae0d4b44b376426b3f1345bec4a5db3170e7008b8
SSDEEP

12288:a7G68NrNixvp1l9t2tEULNc3RYVu2ETIT35l0td5KZ6YHwDDk:a7G5gx7lWtNLNcZ2E9oZlED

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://cajgtus.com/test2/get.php

Attributes

extension
.qehu
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: 0868PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 14 IoCs

resource	yara_rule
behavioral2/memory/2908-2-0x00000000030D0000-0x00000000031EB000-memory.dmp	family_djvu
behavioral2/memory/4740-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4740-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4740-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4740-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4740-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2828-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2828-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2828-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2828-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2828-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2828-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2828-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2828-36-0x0000000000400000-0x0000000000537000-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
2396	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-1-5-21-873560699-1074803302-2326074425-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\892858c4-8776-4347-8b5a-49e63c656b70\\78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe\" --AutoStart"	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.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
2	api.2ip.ua
11	api.2ip.ua
1	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2908 set thread context of 4740	2908	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	73
PID 2132 set thread context of 2828	2132	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	77

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
4740	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe
4740	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe
2828	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe
2828	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2908 wrote to memory of 4740	2908	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	73
PID 2908 wrote to memory of 4740	2908	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	73
PID 2908 wrote to memory of 4740	2908	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	73
PID 2908 wrote to memory of 4740	2908	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	73
PID 2908 wrote to memory of 4740	2908	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	73
PID 2908 wrote to memory of 4740	2908	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	73
PID 2908 wrote to memory of 4740	2908	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	73
PID 2908 wrote to memory of 4740	2908	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	73
PID 2908 wrote to memory of 4740	2908	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	73
PID 2908 wrote to memory of 4740	2908	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	73
PID 4740 wrote to memory of 2396	4740	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	74
PID 4740 wrote to memory of 2396	4740	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	74
PID 4740 wrote to memory of 2396	4740	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	74
PID 4740 wrote to memory of 2132	4740	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	75
PID 4740 wrote to memory of 2132	4740	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	75
PID 4740 wrote to memory of 2132	4740	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	75
PID 2132 wrote to memory of 2828	2132	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	77
PID 2132 wrote to memory of 2828	2132	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	77
PID 2132 wrote to memory of 2828	2132	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	77
PID 2132 wrote to memory of 2828	2132	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	77
PID 2132 wrote to memory of 2828	2132	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	77
PID 2132 wrote to memory of 2828	2132	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	77
PID 2132 wrote to memory of 2828	2132	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	77
PID 2132 wrote to memory of 2828	2132	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	77
PID 2132 wrote to memory of 2828	2132	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	77
PID 2132 wrote to memory of 2828	2132	78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe	77

C:\Users\Admin\AppData\Local\Temp\78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe
"C:\Users\Admin\AppData\Local\Temp\78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2908
- C:\Users\Admin\AppData\Local\Temp\78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe
  "C:\Users\Admin\AppData\Local\Temp\78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4740
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\892858c4-8776-4347-8b5a-49e63c656b70" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:2396
- - C:\Users\Admin\AppData\Local\Temp\78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe
    "C:\Users\Admin\AppData\Local\Temp\78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2132
  - - C:\Users\Admin\AppData\Local\Temp\78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe
      "C:\Users\Admin\AppData\Local\Temp\78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:2828

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
1KB

MD5
b6e71adf7324685d8f60c97bdb99f892

SHA1
ac45dd58c3dfb5d68ffdbc27817f1e5ad5720830

SHA256
40a181e9a8b85b862afc89a604eb290be3b5cd68937feb9ccfc467d3589e8e5c

SHA512
f864a712e300632059c0678ff5f54412fc7f7a1db02e469bcdc77be452886b55cd3d08ff51076278d1a21b091b2fc459e30c53b0d8e8855dbfefa59f0ee4cea9

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
0b66fdfe0c3c67c504b311a42dbea951

SHA1
a38fe3628fa123d0c354e87011129500a59a1e12

SHA256
c0f45e69e2d528645dd95d1085cbdf5b67b42755d5e888f009204209856ce2fc

SHA512
4a7ac48b7ddc35f4cf8d4d1d561b49ca68bd97b967f02a2f71f461fc74ac0a1dd8af84092cc40a524a9b33d401a0e4c02fd6d32157600211384311fbd98699ba

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

Filesize
392B

MD5
e7fe8fb18b3466d41ad1a4dfff9566ea

SHA1
531e6c187a865ea1736e0d2803d44b5280498247

SHA256
7a109c12b694fef00a8fd3e70b5cc5fc3bbd0309f8763b6f8c301a4f9ceadef4

SHA512
02d9329f78c8831c46e5dcaf81e30cdcaa219b4aa879a8c64fa84bc05165c89103cf66c5491c4eb6c64bc95f902884d934c9b70ee5ada64a1009058bf0c69c61

Download Submit
C:\Users\Admin\AppData\Local\892858c4-8776-4347-8b5a-49e63c656b70\78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe.exe

Filesize
774KB

MD5
5b14f1bfbc29a60b38ba51486799d5f5

SHA1
cf0e44b5e5368667d47b13d8e88497343779d20f

SHA256
78b8e716db280ca8806dfa21824b993c592c33baba2a238cf2bd839f454a9cbe

SHA512
acb6f8cf49827a02da12897eacf5bfadd484f80f1c199e069c61a267a2e7dd8c8126250adbf9658741c23f3ae0d4b44b376426b3f1345bec4a5db3170e7008b8

Download Submit
memory/2828-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2828-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2828-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2828-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2828-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2828-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2828-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2828-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2908-1-0x0000000003030000-0x00000000030C3000-memory.dmp

Filesize
588KB

Download
memory/2908-2-0x00000000030D0000-0x00000000031EB000-memory.dmp

Filesize
1.1MB

Download
memory/4740-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4740-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4740-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4740-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4740-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads