djvu | 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98

General

Target

0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe
Size

715KB
MD5

045f054edf180dd0f0b3e0bc4ba2cde1
SHA1

b63439fa1025ae39a561e29288572f59b529807b
SHA256

0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98
SHA512

a7b0a6d242d36f84114e96e784cba75778b4b4c946de72f3ae79f30532cd931482623b042a7c07c49781c5c3c01a41644832f2c122569b5027e75414db97149a
SSDEEP

12288:J6xf4IYTSNBzHVPHmy9iTqu0IFAfhLsI3aanLGi0G5dk/vfA4uxEiP9iRFRF4D2r:J6hYTSNBLVf8Tqu2LsIKaLGi0EdYfkRH

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.vehu
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: 0872PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4340-2-0x0000000004AC0000-0x0000000004BDB000-memory.dmp	family_djvu
behavioral2/memory/424-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/424-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/424-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/424-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/424-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4460-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4460-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4460-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4460-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4460-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4460-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4460-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4460-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4460-37-0x0000000000400000-0x0000000000537000-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

Processes:

icacls.exe

pid process

5084 icacls.exe

pid	process
5084	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2551177587-3778486488-1329702901-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\7f68c559-8f18-4efb-baeb-ae91aeae53c5\\0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe\" --AutoStart"	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.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.

Processes:

flow ioc

1 api.2ip.ua
2 api.2ip.ua
7 api.2ip.ua

flow	ioc
1	api.2ip.ua
2	api.2ip.ua
7	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

Processes:

0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe

description	pid	process	target process
PID 4340 set thread context of 424	4340	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe
PID 4900 set thread context of 4460	4900	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe

pid	process
424	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe
424	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe
4460	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe
4460	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe

C:\Users\Admin\AppData\Local\Temp\0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe
"C:\Users\Admin\AppData\Local\Temp\0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4340

C:\Users\Admin\AppData\Local\Temp\0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe
"C:\Users\Admin\AppData\Local\Temp\0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe"
2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:424

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\7f68c559-8f18-4efb-baeb-ae91aeae53c5" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:5084

C:\Users\Admin\AppData\Local\Temp\0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe
"C:\Users\Admin\AppData\Local\Temp\0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4900

C:\Users\Admin\AppData\Local\Temp\0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe
"C:\Users\Admin\AppData\Local\Temp\0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:4460

Network

MITRE ATT&CK Matrix ATT&CK v13

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

1

T1222

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Filesize
1KB

MD5
3bfb237d95f9c34465d50360f39b3ceb

SHA1
2cdee845ea6ebbd3cd0466b0eae4752842de86cc

SHA256
2ceaddb29268e6112e7aa95722894fb061238ad4e2b247ce23595609daa5eb8d

SHA512
da55bf0fd898acda5dfd2366a96d439807e502c763dca35c3a119c3ab45f6e3d821a1e3fd29858e333606ef0e822f3373b9cb8c41d95736131bb001ad5b6a16f

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
cf93509f6cad738f2b6e771942b2afb4

SHA1
e664fc3e6a7e84726f37fa6da677ad3484dc4a03

SHA256
96c010a87245b7a9da3adea76ec009e1ec225efda83a731e5eb70d8905b5cd3e

SHA512
7906aaa1e9183443f95c90aaa16dd7dc6a06ffaf7ce23ade93b4025d3c9ee00dd45b62b3ad446e59a42460c865e893473f1c27879cdacc67a549bf9df3b23514

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize
392B

MD5
0287d602bbeefb8ee94e21210a3f255d

SHA1
c7082541a659dd0e5a7a2a4a0c2ac73cb88deff4

SHA256
f9ba03b8ea5c5bc0f1895af736b57b8476af086d3f83bd755a00f37c0d4e0b9c

SHA512
17b03044103f69647ea4ab46d61611a7bcbfb5a7267627eec733c68ac85461ca01d2c2958bff56f9aceda1f4aa2e467f10ddf4a622fcf6d4935361f188c618b0

Download Submit
C:\Users\Admin\AppData\Local\7f68c559-8f18-4efb-baeb-ae91aeae53c5\0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe
Filesize
715KB

MD5
045f054edf180dd0f0b3e0bc4ba2cde1

SHA1
b63439fa1025ae39a561e29288572f59b529807b

SHA256
0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98

SHA512
a7b0a6d242d36f84114e96e784cba75778b4b4c946de72f3ae79f30532cd931482623b042a7c07c49781c5c3c01a41644832f2c122569b5027e75414db97149a

Download Submit
memory/424-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/424-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/424-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/424-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/424-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4340-2-0x0000000004AC0000-0x0000000004BDB000-memory.dmp

Filesize
1.1MB

Download
memory/4340-1-0x0000000004A20000-0x0000000004AB9000-memory.dmp

Filesize
612KB

Download
memory/4460-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4460-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4460-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4460-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4460-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4460-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4460-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4460-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4460-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

description	pid	process	target process
PID 4340 wrote to memory of 424	4340	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe
PID 4340 wrote to memory of 424	4340	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe
PID 4340 wrote to memory of 424	4340	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe
PID 4340 wrote to memory of 424	4340	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe
PID 4340 wrote to memory of 424	4340	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe
PID 4340 wrote to memory of 424	4340	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe
PID 4340 wrote to memory of 424	4340	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe
PID 4340 wrote to memory of 424	4340	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe
PID 4340 wrote to memory of 424	4340	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe
PID 4340 wrote to memory of 424	4340	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe
PID 424 wrote to memory of 5084	424	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe	icacls.exe
PID 424 wrote to memory of 5084	424	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe	icacls.exe
PID 424 wrote to memory of 5084	424	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe	icacls.exe
PID 424 wrote to memory of 4900	424	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe
PID 424 wrote to memory of 4900	424	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe
PID 424 wrote to memory of 4900	424	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe
PID 4900 wrote to memory of 4460	4900	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe
PID 4900 wrote to memory of 4460	4900	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe
PID 4900 wrote to memory of 4460	4900	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe
PID 4900 wrote to memory of 4460	4900	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe
PID 4900 wrote to memory of 4460	4900	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe
PID 4900 wrote to memory of 4460	4900	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe
PID 4900 wrote to memory of 4460	4900	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe
PID 4900 wrote to memory of 4460	4900	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe
PID 4900 wrote to memory of 4460	4900	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe
PID 4900 wrote to memory of 4460	4900	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe	0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads