djvu | 8a11f4d34a4ba7afea677810458e7aa6d31983f4dcd20d5eb5cff0c48f192145

General

Target

8a11f4d34a4ba7afea677810458e7aa6d31983f4dcd20d5eb5cff0c48f192145.exe
Size

767KB
MD5

ba46ae626df58081d056cda82d2673c6
SHA1

8c1c5e42666e0eaebbcd25f267252fe0256669f8
SHA256

8a11f4d34a4ba7afea677810458e7aa6d31983f4dcd20d5eb5cff0c48f192145
SHA512

0065bd971f8f356a9d1c82d1ac75678323952dd4e25ea2ce046d4eaf1bcc3a7dca747170ff21d6d42b6cb939c9001283c8eb783c11e553d86dbbf0d00859bb00
SSDEEP

12288:pBGp4OBr2ASjaGFi8XBaXq38AInxP2pEDZkHZu/WnTCzweGgOjTi9YLINsADQ75t:pB8BWUXqsb52pEDZ06Wno0gOvVZ75

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.mzhi
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: 0797JOsie

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 6 IoCs

resource	yara_rule
behavioral2/memory/944-1-0x00000000006F0000-0x000000000080B000-memory.dmp	family_djvu
behavioral2/memory/3068-2-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3068-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3068-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3068-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3068-15-0x0000000000400000-0x0000000000537000-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	8a11f4d34a4ba7afea677810458e7aa6d31983f4dcd20d5eb5cff0c48f192145.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2872	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\\05f17c7c-d2ce-45d2-9761-08fda70516eb\\8a11f4d34a4ba7afea677810458e7aa6d31983f4dcd20d5eb5cff0c48f192145.exe\" --AutoStart"	8a11f4d34a4ba7afea677810458e7aa6d31983f4dcd20d5eb5cff0c48f192145.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
59	api.2ip.ua
60	api.2ip.ua

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 944 set thread context of 3068	944	8a11f4d34a4ba7afea677810458e7aa6d31983f4dcd20d5eb5cff0c48f192145.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
3068	8a11f4d34a4ba7afea677810458e7aa6d31983f4dcd20d5eb5cff0c48f192145.exe
3068	8a11f4d34a4ba7afea677810458e7aa6d31983f4dcd20d5eb5cff0c48f192145.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 944 wrote to memory of 3068	944	8a11f4d34a4ba7afea677810458e7aa6d31983f4dcd20d5eb5cff0c48f192145.exe	100
PID 944 wrote to memory of 3068	944	8a11f4d34a4ba7afea677810458e7aa6d31983f4dcd20d5eb5cff0c48f192145.exe	100
PID 944 wrote to memory of 3068	944	8a11f4d34a4ba7afea677810458e7aa6d31983f4dcd20d5eb5cff0c48f192145.exe	100
PID 944 wrote to memory of 3068	944	8a11f4d34a4ba7afea677810458e7aa6d31983f4dcd20d5eb5cff0c48f192145.exe	100
PID 944 wrote to memory of 3068	944	8a11f4d34a4ba7afea677810458e7aa6d31983f4dcd20d5eb5cff0c48f192145.exe	100
PID 944 wrote to memory of 3068	944	8a11f4d34a4ba7afea677810458e7aa6d31983f4dcd20d5eb5cff0c48f192145.exe	100
PID 944 wrote to memory of 3068	944	8a11f4d34a4ba7afea677810458e7aa6d31983f4dcd20d5eb5cff0c48f192145.exe	100
PID 944 wrote to memory of 3068	944	8a11f4d34a4ba7afea677810458e7aa6d31983f4dcd20d5eb5cff0c48f192145.exe	100
PID 944 wrote to memory of 3068	944	8a11f4d34a4ba7afea677810458e7aa6d31983f4dcd20d5eb5cff0c48f192145.exe	100
PID 944 wrote to memory of 3068	944	8a11f4d34a4ba7afea677810458e7aa6d31983f4dcd20d5eb5cff0c48f192145.exe	100
PID 3068 wrote to memory of 2872	3068	8a11f4d34a4ba7afea677810458e7aa6d31983f4dcd20d5eb5cff0c48f192145.exe	101
PID 3068 wrote to memory of 2872	3068	8a11f4d34a4ba7afea677810458e7aa6d31983f4dcd20d5eb5cff0c48f192145.exe	101
PID 3068 wrote to memory of 2872	3068	8a11f4d34a4ba7afea677810458e7aa6d31983f4dcd20d5eb5cff0c48f192145.exe	101
PID 3068 wrote to memory of 4800	3068	8a11f4d34a4ba7afea677810458e7aa6d31983f4dcd20d5eb5cff0c48f192145.exe	102
PID 3068 wrote to memory of 4800	3068	8a11f4d34a4ba7afea677810458e7aa6d31983f4dcd20d5eb5cff0c48f192145.exe	102
PID 3068 wrote to memory of 4800	3068	8a11f4d34a4ba7afea677810458e7aa6d31983f4dcd20d5eb5cff0c48f192145.exe	102

C:\Users\Admin\AppData\Local\Temp\8a11f4d34a4ba7afea677810458e7aa6d31983f4dcd20d5eb5cff0c48f192145.exe
"C:\Users\Admin\AppData\Local\Temp\8a11f4d34a4ba7afea677810458e7aa6d31983f4dcd20d5eb5cff0c48f192145.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:944
- C:\Users\Admin\AppData\Local\Temp\8a11f4d34a4ba7afea677810458e7aa6d31983f4dcd20d5eb5cff0c48f192145.exe
  "C:\Users\Admin\AppData\Local\Temp\8a11f4d34a4ba7afea677810458e7aa6d31983f4dcd20d5eb5cff0c48f192145.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3068
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\05f17c7c-d2ce-45d2-9761-08fda70516eb" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:2872
- - C:\Users\Admin\AppData\Local\Temp\8a11f4d34a4ba7afea677810458e7aa6d31983f4dcd20d5eb5cff0c48f192145.exe
    "C:\Users\Admin\AppData\Local\Temp\8a11f4d34a4ba7afea677810458e7aa6d31983f4dcd20d5eb5cff0c48f192145.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    PID:4800

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\Local\05f17c7c-d2ce-45d2-9761-08fda70516eb\8a11f4d34a4ba7afea677810458e7aa6d31983f4dcd20d5eb5cff0c48f192145.exe

Filesize
767KB

MD5
ba46ae626df58081d056cda82d2673c6

SHA1
8c1c5e42666e0eaebbcd25f267252fe0256669f8

SHA256
8a11f4d34a4ba7afea677810458e7aa6d31983f4dcd20d5eb5cff0c48f192145

SHA512
0065bd971f8f356a9d1c82d1ac75678323952dd4e25ea2ce046d4eaf1bcc3a7dca747170ff21d6d42b6cb939c9001283c8eb783c11e553d86dbbf0d00859bb00

Download Submit
memory/944-0-0x0000000002210000-0x00000000022A1000-memory.dmp

Filesize
580KB

Download
memory/944-1-0x00000000006F0000-0x000000000080B000-memory.dmp

Filesize
1.1MB

Download
memory/944-4-0x0000000002210000-0x00000000022A1000-memory.dmp

Filesize
580KB

Download
memory/3068-2-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3068-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3068-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3068-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3068-15-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads