djvu | f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0

General

Target

f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe
Size

708KB
MD5

be321c572727e800755c4b8a1259dbd0
SHA1

a7977c6c83b51f2caa7ee89b5afdbf2c5ddf3cdb
SHA256

f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0
SHA512

258a831243ac3121368333488cfae24ae2572d94fc739238e56e4b67d69420a2ce7ca9a6645c634ab7d91040b196ad2850309df2885f1d2976b49d6de5a4703d
SSDEEP

12288:KJY8QgxiwZWsWfGdFYRLc+TFjNUSkFL7Z/5Nkq15UqsvRCZK7RHg:KJYfwosW+CRbRNU3L795P15SRndHg

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.vepi
offline_id
EGfa5svnSGFJka7LZBQoqff0QtO1IpTauoDvGvt1
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/33b490a613f49fa190924f199d2c079e20240512191214/caaf73 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: 0871PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

resource	yara_rule
behavioral1/memory/4564-2-0x0000000004090000-0x00000000041AB000-memory.dmp	family_djvu
behavioral1/memory/4136-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4136-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4136-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4136-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4136-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1212-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1212-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1212-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1212-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1212-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1212-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1212-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1212-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1212-37-0x0000000000400000-0x0000000000537000-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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
1504	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-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\de6d7c77-a6c5-4aad-9aee-3f9bbefbeeb8\\f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe\" --AutoStart"	f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.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
1	api.2ip.ua
2	api.2ip.ua
10	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4564 set thread context of 4136	4564	f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe	82
PID 1716 set thread context of 1212	1716	f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe	89

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
4136	f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe
4136	f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe
1212	f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe
1212	f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4564 wrote to memory of 4136	4564	f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe	82
PID 4564 wrote to memory of 4136	4564	f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe	82
PID 4564 wrote to memory of 4136	4564	f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe	82
PID 4564 wrote to memory of 4136	4564	f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe	82
PID 4564 wrote to memory of 4136	4564	f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe	82
PID 4564 wrote to memory of 4136	4564	f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe	82
PID 4564 wrote to memory of 4136	4564	f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe	82
PID 4564 wrote to memory of 4136	4564	f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe	82
PID 4564 wrote to memory of 4136	4564	f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe	82
PID 4564 wrote to memory of 4136	4564	f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe	82
PID 4136 wrote to memory of 1504	4136	f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe	85
PID 4136 wrote to memory of 1504	4136	f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe	85
PID 4136 wrote to memory of 1504	4136	f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe	85
PID 4136 wrote to memory of 1716	4136	f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe	87
PID 4136 wrote to memory of 1716	4136	f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe	87
PID 4136 wrote to memory of 1716	4136	f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe	87
PID 1716 wrote to memory of 1212	1716	f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe	89
PID 1716 wrote to memory of 1212	1716	f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe	89
PID 1716 wrote to memory of 1212	1716	f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe	89
PID 1716 wrote to memory of 1212	1716	f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe	89
PID 1716 wrote to memory of 1212	1716	f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe	89
PID 1716 wrote to memory of 1212	1716	f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe	89
PID 1716 wrote to memory of 1212	1716	f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe	89
PID 1716 wrote to memory of 1212	1716	f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe	89
PID 1716 wrote to memory of 1212	1716	f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe	89
PID 1716 wrote to memory of 1212	1716	f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe	89

C:\Users\Admin\AppData\Local\Temp\f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe
"C:\Users\Admin\AppData\Local\Temp\f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4564
- C:\Users\Admin\AppData\Local\Temp\f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe
  "C:\Users\Admin\AppData\Local\Temp\f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4136
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\de6d7c77-a6c5-4aad-9aee-3f9bbefbeeb8" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:1504
- - C:\Users\Admin\AppData\Local\Temp\f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe
    "C:\Users\Admin\AppData\Local\Temp\f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:1716
  - - C:\Users\Admin\AppData\Local\Temp\f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe
      "C:\Users\Admin\AppData\Local\Temp\f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:1212

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
df80f9ba75076db634761b6132e0d4e3

SHA1
07983946fb660752c7cccb2ef82d01ec4c9ecc5d

SHA256
d5ff96fd8b416de93a85783192206224cf8821c240cd8ff755f2e8270153dd99

SHA512
4ec734c5d29e9ce00b00e42b627253195e8c7a158433fedfcee428e692a6501981c33d7c8a39235f8b691f087145cdbe660b430493edbeedb12588c5cdd5a66a

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
e9dbef1bfa5823f9e4f1c48545e0e05b

SHA1
ae053f0aa40e3a5546e7c248afd603ea67fcfbaf

SHA256
e556ef7c642486cc00e2906ee58ab1f45e13689aeff734a28ebd74a6eba92391

SHA512
d4afc7378d5a67a79645a81e6e3321167bad007428068a88eb262d857e56fbe10b29502299b5895ae213d772f0b239b524946c507cf92a4db5a2a7f72fd44299

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

Filesize
392B

MD5
80119f81e2051d052f9e5a260260bd44

SHA1
c378ba712fbc0ce038990a220a195b3bcae0ef1f

SHA256
09357c4e87513815afd7e10de91d6d15fab6d187843c8cb59ae9660ae4a0f8f0

SHA512
6d51e17f4d13d66f5ecd07f0cdfd57ea549c31a52744c8e77f354adc5da01566a0091abba073b7ffb747d4d6a06068d4b228761e3032ad376265def9feade896

Download Submit
C:\Users\Admin\AppData\Local\de6d7c77-a6c5-4aad-9aee-3f9bbefbeeb8\f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe

Filesize
708KB

MD5
be321c572727e800755c4b8a1259dbd0

SHA1
a7977c6c83b51f2caa7ee89b5afdbf2c5ddf3cdb

SHA256
f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0

SHA512
258a831243ac3121368333488cfae24ae2572d94fc739238e56e4b67d69420a2ce7ca9a6645c634ab7d91040b196ad2850309df2885f1d2976b49d6de5a4703d

Download Submit
memory/1212-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1212-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1212-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1212-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1212-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1212-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1212-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1212-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1212-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4136-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4136-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4136-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4136-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4136-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4564-2-0x0000000004090000-0x00000000041AB000-memory.dmp

Filesize
1.1MB

Download
memory/4564-1-0x0000000003FE0000-0x0000000004078000-memory.dmp

Filesize
608KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads