djvu | 7b3eb4e7cad673ac4e9d3894466a15dedd45621d116e0222209b3ab98b6677c3

General

Target

7b3eb4e7cad673ac4e9d3894466a15dedd45621d116e0222209b3ab98b6677c3.exe
Size

740KB
MD5

5aad3088c1ccdb8ce85b137074fa9bd6
SHA1

b964df4fe2ae3ab72e54a8e5e362ea8d15305270
SHA256

7b3eb4e7cad673ac4e9d3894466a15dedd45621d116e0222209b3ab98b6677c3
SHA512

26f8cc1b776ccd43073f72f3cd1466744a4437d851234b950ecd84d3c48595584ccb2ccad2e6f086e652e1d54b4735465b70cbdd659a0ca48ae76008b25eb0b1

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://ring1.ug/As73yhsyU34578hxxx/SDf565g/get.php

Attributes

extension
.meka
offline_id
iToA4bsB4p1U6eP9sYfwett26TIoVaIjXvmekat1
payload_url
http://ring1.ug/files/cost/updatewin1.exe
http://ring1.ug/files/cost/updatewin2.exe
http://ring1.ug/files/cost/updatewin.exe
http://ring1.ug/files/cost/3.exe
http://ring1.ug/files/cost/4.exe
http://ring1.ug/files/cost/5.exe
ransomnote
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rsa_pubkey.plain

Signatures

Detected Djvu ransomware 6 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3488-131-0x0000000001290000-0x00000000013AA000-memory.dmp	family_djvu
behavioral2/memory/3488-132-0x0000000000400000-0x0000000000C56000-memory.dmp	family_djvu
behavioral2/memory/3488-133-0x0000000001290000-0x00000000013AA000-memory.dmp	family_djvu
behavioral2/memory/1968-142-0x0000000000400000-0x0000000000C56000-memory.dmp	family_djvu
behavioral2/memory/1968-143-0x0000000000400000-0x0000000000C56000-memory.dmp	family_djvu
behavioral2/memory/3488-144-0x0000000000400000-0x0000000000C56000-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

Processes:

7b3eb4e7cad673ac4e9d3894466a15dedd45621d116e0222209b3ab98b6677c3.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation	7b3eb4e7cad673ac4e9d3894466a15dedd45621d116e0222209b3ab98b6677c3.exe

Modifies file permissions 1 TTPs 1 IoCs
discovery

File Permissions Modification
T1222

Processes:

icacls.exe

pid process

4584 icacls.exe

pid	process
4584	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

7b3eb4e7cad673ac4e9d3894466a15dedd45621d116e0222209b3ab98b6677c3.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\88d9e43b-38e9-4284-b019-467547e83545\\7b3eb4e7cad673ac4e9d3894466a15dedd45621d116e0222209b3ab98b6677c3.exe\" --AutoStart"	7b3eb4e7cad673ac4e9d3894466a15dedd45621d116e0222209b3ab98b6677c3.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

6 api.2ip.ua
7 api.2ip.ua
28 api.2ip.ua
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

4416 3488 WerFault.exe 7b3eb4e7cad673ac4e9d3894466a15dedd45621d116e0222209b3ab98b6677c3.exe

flow	ioc
6	api.2ip.ua
7	api.2ip.ua
28	api.2ip.ua

pid	pid_target	process	target process
4416	3488	WerFault.exe	7b3eb4e7cad673ac4e9d3894466a15dedd45621d116e0222209b3ab98b6677c3.exe

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1130

Modify Registry

T1112

Processes:

7b3eb4e7cad673ac4e9d3894466a15dedd45621d116e0222209b3ab98b6677c3.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349	7b3eb4e7cad673ac4e9d3894466a15dedd45621d116e0222209b3ab98b6677c3.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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	7b3eb4e7cad673ac4e9d3894466a15dedd45621d116e0222209b3ab98b6677c3.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

7b3eb4e7cad673ac4e9d3894466a15dedd45621d116e0222209b3ab98b6677c3.exe7b3eb4e7cad673ac4e9d3894466a15dedd45621d116e0222209b3ab98b6677c3.exe

pid	process
3488	7b3eb4e7cad673ac4e9d3894466a15dedd45621d116e0222209b3ab98b6677c3.exe
3488	7b3eb4e7cad673ac4e9d3894466a15dedd45621d116e0222209b3ab98b6677c3.exe
1968	7b3eb4e7cad673ac4e9d3894466a15dedd45621d116e0222209b3ab98b6677c3.exe
1968	7b3eb4e7cad673ac4e9d3894466a15dedd45621d116e0222209b3ab98b6677c3.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

7b3eb4e7cad673ac4e9d3894466a15dedd45621d116e0222209b3ab98b6677c3.exe

description	pid	process	target process
PID 3488 wrote to memory of 4584	3488	7b3eb4e7cad673ac4e9d3894466a15dedd45621d116e0222209b3ab98b6677c3.exe	icacls.exe
PID 3488 wrote to memory of 4584	3488	7b3eb4e7cad673ac4e9d3894466a15dedd45621d116e0222209b3ab98b6677c3.exe	icacls.exe
PID 3488 wrote to memory of 4584	3488	7b3eb4e7cad673ac4e9d3894466a15dedd45621d116e0222209b3ab98b6677c3.exe	icacls.exe
PID 3488 wrote to memory of 1968	3488	7b3eb4e7cad673ac4e9d3894466a15dedd45621d116e0222209b3ab98b6677c3.exe	7b3eb4e7cad673ac4e9d3894466a15dedd45621d116e0222209b3ab98b6677c3.exe
PID 3488 wrote to memory of 1968	3488	7b3eb4e7cad673ac4e9d3894466a15dedd45621d116e0222209b3ab98b6677c3.exe	7b3eb4e7cad673ac4e9d3894466a15dedd45621d116e0222209b3ab98b6677c3.exe
PID 3488 wrote to memory of 1968	3488	7b3eb4e7cad673ac4e9d3894466a15dedd45621d116e0222209b3ab98b6677c3.exe	7b3eb4e7cad673ac4e9d3894466a15dedd45621d116e0222209b3ab98b6677c3.exe

C:\Users\Admin\AppData\Local\Temp\7b3eb4e7cad673ac4e9d3894466a15dedd45621d116e0222209b3ab98b6677c3.exe
"C:\Users\Admin\AppData\Local\Temp\7b3eb4e7cad673ac4e9d3894466a15dedd45621d116e0222209b3ab98b6677c3.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3488

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\88d9e43b-38e9-4284-b019-467547e83545" /deny *S-1-1-0:(OI)(CI)(DE,DC)
2⤵
- Modifies file permissions
PID:4584

C:\Users\Admin\AppData\Local\Temp\7b3eb4e7cad673ac4e9d3894466a15dedd45621d116e0222209b3ab98b6677c3.exe
"C:\Users\Admin\AppData\Local\Temp\7b3eb4e7cad673ac4e9d3894466a15dedd45621d116e0222209b3ab98b6677c3.exe" --Admin IsNotAutoStart IsNotTask
2⤵
- Suspicious behavior: EnumeratesProcesses
PID:1968

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3488 -s 1956
2⤵
- Program crash
PID:4416

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 3488 -ip 3488
1⤵
PID:1888

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

File Permissions Modification

1

T1222

Modify Registry

2

T1112

Install Root Certificate

1

T1130

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\3538626A1FCCCA43C7E18F220BDD9B02
Filesize
978B

MD5
53f5b8be760bdfa4cbecd3d6492723f2

SHA1
ae68ecd6b74d6f7b6e6496c039b997481fd16a81

SHA256
5e388e290b9db7db1470d39f56ce369d6928a57a16ea7efe25c9038c895ebd31

SHA512
6d0f4082520d0571092452d1c892b189c092dacf7377f79314ca8e7b54ae9726b3e878fa436795e9b60ae816d5c5943ce8855ba7e0044901862da8356a629f50

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
Filesize
471B

MD5
b315b3f5f97226f5dd9e59adbdac03e4

SHA1
e7f513b703598517413b702f6a7e5db0f479e31a

SHA256
16b96325c2dbd241387842c4d464d1098827cbd97abd940647e7893a12243fea

SHA512
5650e2c7e80debdd930c016c674390e2fa5c6d7bbdade707785708f4dddecf5a0650bb0c2a52e1015f3c32e510901a70da9fc0e99898b97a6ed945bdb31e1c3b

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\3538626A1FCCCA43C7E18F220BDD9B02
Filesize
274B

MD5
7e1489d58ae123ab87ce1aa58580f24c

SHA1
443dada8cf876107fed1ac606a338f5dced185a2

SHA256
2719bf9bc73fa7115e706e7d9680fe8a3d4e4ec621ccd78a4a85ccde554bd267

SHA512
8f355dc37d85ae100dbad476369b0ee499bc9686a2db18c00f9e9f43869067e6b9ddd2df34f502b8d703e4ff92d4cd5b081a39a3eeb76eb6d60072479b4aca14

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
Filesize
396B

MD5
440d21f8e0b2f2ec6afa53e926eeb7d7

SHA1
e55ddef032acc163b7622d9a945960150228353a

SHA256
06e50f0491edfdb8121a25bfd4e47033b4f92f16b6053fd3f660b6832a82176e

SHA512
08e5f352cde5f3629449e4280759601d41a5efed07f99ce6346aca9a768611f779e8611e8f07624f5779928048157f7e2f466b00fe9998a4acc5588424bde783

Download Submit
C:\Users\Admin\AppData\Local\88d9e43b-38e9-4284-b019-467547e83545\7b3eb4e7cad673ac4e9d3894466a15dedd45621d116e0222209b3ab98b6677c3.exe
Filesize
740KB

MD5
5aad3088c1ccdb8ce85b137074fa9bd6

SHA1
b964df4fe2ae3ab72e54a8e5e362ea8d15305270

SHA256
7b3eb4e7cad673ac4e9d3894466a15dedd45621d116e0222209b3ab98b6677c3

SHA512
26f8cc1b776ccd43073f72f3cd1466744a4437d851234b950ecd84d3c48595584ccb2ccad2e6f086e652e1d54b4735465b70cbdd659a0ca48ae76008b25eb0b1

Download Submit
memory/1968-136-0x0000000000000000-mapping.dmp

Download
memory/1968-141-0x0000000000D8F000-0x0000000000E20000-memory.dmp

Filesize
580KB

Download
memory/1968-142-0x0000000000400000-0x0000000000C56000-memory.dmp

Filesize
8.3MB

Download
memory/1968-143-0x0000000000400000-0x0000000000C56000-memory.dmp

Filesize
8.3MB

Download
memory/3488-130-0x000000000113B000-0x00000000011CC000-memory.dmp

Filesize
580KB

Download
memory/3488-133-0x0000000001290000-0x00000000013AA000-memory.dmp

Filesize
1.1MB

Download
memory/3488-132-0x0000000000400000-0x0000000000C56000-memory.dmp

Filesize
8.3MB

Download
memory/3488-131-0x0000000001290000-0x00000000013AA000-memory.dmp

Filesize
1.1MB

Download
memory/3488-144-0x0000000000400000-0x0000000000C56000-memory.dmp

Filesize
8.3MB

Download
memory/4584-134-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads