djvu | a868844a924f062a38ee0d95f8d1eff04a1d62bed3acfbba5e7e1dde1bb47afa

General

Target

a868844a924f062a38ee0d95f8d1eff04a1d62bed3acfbba5e7e1dde1bb47afa_JC.exe
Size

742KB
MD5

bec80e84ddee518c179648ad2dcf986c
SHA1

71e984015c39cc6bb1cbfb221e961c04640e84a2
SHA256

a868844a924f062a38ee0d95f8d1eff04a1d62bed3acfbba5e7e1dde1bb47afa
SHA512

006f11a4a169f46fca6cd03540bf00f4c8d26317353fe6baee5109b9b0e55c4e6466e4645c509c9f455dc194d997544d8e524f515d72f90d4254587b5a70752d
SSDEEP

12288:xcNFo7E3CfWIP/H3Op3aT6on/P2WYRLrKE6PCzMjrITexEea3EkgFp27SkZ/JaW:xcNFo7lc+Pmrnz2eeOeaXpbZ/gW

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.mzre
offline_id
64GZgS7xxeK837qu1w0KPUK0sweaDoAeJlv15vt1
payload_url
http://colisumy.com/dl/build2.exe

http://zexeq.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. You can get and look video overview decrypt tool: https://we.tl/t-sxZWJ43EKx Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. 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: 0795JOsie

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 6 IoCs

resource	yara_rule
behavioral2/memory/4588-1-0x00000000006A0000-0x00000000007BB000-memory.dmp	family_djvu
behavioral2/memory/1216-2-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1216-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1216-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1216-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1216-15-0x0000000000400000-0x0000000000537000-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-1-5-21-1141987721-3945596982-3297311814-1000\Control Panel\International\Geo\Nation	a868844a924f062a38ee0d95f8d1eff04a1d62bed3acfbba5e7e1dde1bb47afa_JC.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2096	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-1-5-21-1141987721-3945596982-3297311814-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\5fdbcf7b-ba33-42a2-bc4e-ad2aef046bf3\\a868844a924f062a38ee0d95f8d1eff04a1d62bed3acfbba5e7e1dde1bb47afa_JC.exe\" --AutoStart"	a868844a924f062a38ee0d95f8d1eff04a1d62bed3acfbba5e7e1dde1bb47afa_JC.exe

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
56	api.2ip.ua
57	api.2ip.ua

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4588 set thread context of 1216	4588	a868844a924f062a38ee0d95f8d1eff04a1d62bed3acfbba5e7e1dde1bb47afa_JC.exe	100

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1216	a868844a924f062a38ee0d95f8d1eff04a1d62bed3acfbba5e7e1dde1bb47afa_JC.exe
1216	a868844a924f062a38ee0d95f8d1eff04a1d62bed3acfbba5e7e1dde1bb47afa_JC.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 4588 wrote to memory of 1216	4588	a868844a924f062a38ee0d95f8d1eff04a1d62bed3acfbba5e7e1dde1bb47afa_JC.exe	100
PID 4588 wrote to memory of 1216	4588	a868844a924f062a38ee0d95f8d1eff04a1d62bed3acfbba5e7e1dde1bb47afa_JC.exe	100
PID 4588 wrote to memory of 1216	4588	a868844a924f062a38ee0d95f8d1eff04a1d62bed3acfbba5e7e1dde1bb47afa_JC.exe	100
PID 4588 wrote to memory of 1216	4588	a868844a924f062a38ee0d95f8d1eff04a1d62bed3acfbba5e7e1dde1bb47afa_JC.exe	100
PID 4588 wrote to memory of 1216	4588	a868844a924f062a38ee0d95f8d1eff04a1d62bed3acfbba5e7e1dde1bb47afa_JC.exe	100
PID 4588 wrote to memory of 1216	4588	a868844a924f062a38ee0d95f8d1eff04a1d62bed3acfbba5e7e1dde1bb47afa_JC.exe	100
PID 4588 wrote to memory of 1216	4588	a868844a924f062a38ee0d95f8d1eff04a1d62bed3acfbba5e7e1dde1bb47afa_JC.exe	100
PID 4588 wrote to memory of 1216	4588	a868844a924f062a38ee0d95f8d1eff04a1d62bed3acfbba5e7e1dde1bb47afa_JC.exe	100
PID 4588 wrote to memory of 1216	4588	a868844a924f062a38ee0d95f8d1eff04a1d62bed3acfbba5e7e1dde1bb47afa_JC.exe	100
PID 4588 wrote to memory of 1216	4588	a868844a924f062a38ee0d95f8d1eff04a1d62bed3acfbba5e7e1dde1bb47afa_JC.exe	100
PID 1216 wrote to memory of 2096	1216	a868844a924f062a38ee0d95f8d1eff04a1d62bed3acfbba5e7e1dde1bb47afa_JC.exe	101
PID 1216 wrote to memory of 2096	1216	a868844a924f062a38ee0d95f8d1eff04a1d62bed3acfbba5e7e1dde1bb47afa_JC.exe	101
PID 1216 wrote to memory of 2096	1216	a868844a924f062a38ee0d95f8d1eff04a1d62bed3acfbba5e7e1dde1bb47afa_JC.exe	101
PID 1216 wrote to memory of 5020	1216	a868844a924f062a38ee0d95f8d1eff04a1d62bed3acfbba5e7e1dde1bb47afa_JC.exe	102
PID 1216 wrote to memory of 5020	1216	a868844a924f062a38ee0d95f8d1eff04a1d62bed3acfbba5e7e1dde1bb47afa_JC.exe	102
PID 1216 wrote to memory of 5020	1216	a868844a924f062a38ee0d95f8d1eff04a1d62bed3acfbba5e7e1dde1bb47afa_JC.exe	102

C:\Users\Admin\AppData\Local\Temp\a868844a924f062a38ee0d95f8d1eff04a1d62bed3acfbba5e7e1dde1bb47afa_JC.exe
"C:\Users\Admin\AppData\Local\Temp\a868844a924f062a38ee0d95f8d1eff04a1d62bed3acfbba5e7e1dde1bb47afa_JC.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4588
- C:\Users\Admin\AppData\Local\Temp\a868844a924f062a38ee0d95f8d1eff04a1d62bed3acfbba5e7e1dde1bb47afa_JC.exe
  "C:\Users\Admin\AppData\Local\Temp\a868844a924f062a38ee0d95f8d1eff04a1d62bed3acfbba5e7e1dde1bb47afa_JC.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1216
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\5fdbcf7b-ba33-42a2-bc4e-ad2aef046bf3" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:2096
- - C:\Users\Admin\AppData\Local\Temp\a868844a924f062a38ee0d95f8d1eff04a1d62bed3acfbba5e7e1dde1bb47afa_JC.exe
    "C:\Users\Admin\AppData\Local\Temp\a868844a924f062a38ee0d95f8d1eff04a1d62bed3acfbba5e7e1dde1bb47afa_JC.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    PID:5020

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\5fdbcf7b-ba33-42a2-bc4e-ad2aef046bf3\a868844a924f062a38ee0d95f8d1eff04a1d62bed3acfbba5e7e1dde1bb47afa_JC.exe

Filesize
742KB

MD5
bec80e84ddee518c179648ad2dcf986c

SHA1
71e984015c39cc6bb1cbfb221e961c04640e84a2

SHA256
a868844a924f062a38ee0d95f8d1eff04a1d62bed3acfbba5e7e1dde1bb47afa

SHA512
006f11a4a169f46fca6cd03540bf00f4c8d26317353fe6baee5109b9b0e55c4e6466e4645c509c9f455dc194d997544d8e524f515d72f90d4254587b5a70752d

Download Submit
memory/1216-2-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1216-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1216-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1216-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1216-15-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4588-0-0x00000000022E0000-0x0000000002371000-memory.dmp

Filesize
580KB

Download
memory/4588-1-0x00000000006A0000-0x00000000007BB000-memory.dmp

Filesize
1.1MB

Download
memory/4588-4-0x00000000022E0000-0x0000000002371000-memory.dmp

Filesize
580KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads