djvu | e0b1d4ab4df12dd7c961c4c23ea104edc541dbd5adbab2857d1560a54c6d0a79

General

Target

e641e629b947ccbbf927fefa21a566957073f3549701c300195dd9c7a31e0839.exe
Size

761KB
MD5

d90d3d59896e60d32bcbe02f0e286939
SHA1

a0ba6c2540a70fc1dafd9309c2ef6846b4f74597
SHA256

e641e629b947ccbbf927fefa21a566957073f3549701c300195dd9c7a31e0839
SHA512

19463da0d7c318c48d2e9d13b8c9b6a383cf61110cf4670b431a35f7353e3fc4014354ccfa5da14f09ed59c6a2a873dbad00eaf8ca2b95f0da84d26b85dbe7e7
SSDEEP

12288:uTTUJAvxY4CKeYQ8Lmu02b+d1JnbO4hx+E2WnYvingh8RJCiRhPI:ukJsxY2Qymjc+d1JnbJx+EVn4MXfCiRS

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.mzqt
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: 0794JOsie

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 9 IoCs

resource	yara_rule
behavioral2/memory/4884-1-0x00000000022F0000-0x000000000240B000-memory.dmp	family_djvu
behavioral2/memory/4496-2-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4496-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4496-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4496-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4496-15-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3728-18-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3728-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3728-19-0x0000000000400000-0x0000000000537000-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-1-5-21-1574508946-349927670-1185736483-1000\Control Panel\International\Geo\Nation	e641e629b947ccbbf927fefa21a566957073f3549701c300195dd9c7a31e0839.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
1220	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-1-5-21-1574508946-349927670-1185736483-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\5242545e-23b9-4f30-bc88-1bcf859cd8ca\\e641e629b947ccbbf927fefa21a566957073f3549701c300195dd9c7a31e0839.exe\" --AutoStart"	e641e629b947ccbbf927fefa21a566957073f3549701c300195dd9c7a31e0839.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
17	api.2ip.ua
18	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4884 set thread context of 4496	4884	e641e629b947ccbbf927fefa21a566957073f3549701c300195dd9c7a31e0839.exe	88
PID 1672 set thread context of 3728	1672	e641e629b947ccbbf927fefa21a566957073f3549701c300195dd9c7a31e0839.exe	99

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2204	3728	WerFault.exe	99

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4496	e641e629b947ccbbf927fefa21a566957073f3549701c300195dd9c7a31e0839.exe
4496	e641e629b947ccbbf927fefa21a566957073f3549701c300195dd9c7a31e0839.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4884 wrote to memory of 4496	4884	e641e629b947ccbbf927fefa21a566957073f3549701c300195dd9c7a31e0839.exe	88
PID 4884 wrote to memory of 4496	4884	e641e629b947ccbbf927fefa21a566957073f3549701c300195dd9c7a31e0839.exe	88
PID 4884 wrote to memory of 4496	4884	e641e629b947ccbbf927fefa21a566957073f3549701c300195dd9c7a31e0839.exe	88
PID 4884 wrote to memory of 4496	4884	e641e629b947ccbbf927fefa21a566957073f3549701c300195dd9c7a31e0839.exe	88
PID 4884 wrote to memory of 4496	4884	e641e629b947ccbbf927fefa21a566957073f3549701c300195dd9c7a31e0839.exe	88
PID 4884 wrote to memory of 4496	4884	e641e629b947ccbbf927fefa21a566957073f3549701c300195dd9c7a31e0839.exe	88
PID 4884 wrote to memory of 4496	4884	e641e629b947ccbbf927fefa21a566957073f3549701c300195dd9c7a31e0839.exe	88
PID 4884 wrote to memory of 4496	4884	e641e629b947ccbbf927fefa21a566957073f3549701c300195dd9c7a31e0839.exe	88
PID 4884 wrote to memory of 4496	4884	e641e629b947ccbbf927fefa21a566957073f3549701c300195dd9c7a31e0839.exe	88
PID 4884 wrote to memory of 4496	4884	e641e629b947ccbbf927fefa21a566957073f3549701c300195dd9c7a31e0839.exe	88
PID 4496 wrote to memory of 1220	4496	e641e629b947ccbbf927fefa21a566957073f3549701c300195dd9c7a31e0839.exe	89
PID 4496 wrote to memory of 1220	4496	e641e629b947ccbbf927fefa21a566957073f3549701c300195dd9c7a31e0839.exe	89
PID 4496 wrote to memory of 1220	4496	e641e629b947ccbbf927fefa21a566957073f3549701c300195dd9c7a31e0839.exe	89
PID 4496 wrote to memory of 1672	4496	e641e629b947ccbbf927fefa21a566957073f3549701c300195dd9c7a31e0839.exe	90
PID 4496 wrote to memory of 1672	4496	e641e629b947ccbbf927fefa21a566957073f3549701c300195dd9c7a31e0839.exe	90
PID 4496 wrote to memory of 1672	4496	e641e629b947ccbbf927fefa21a566957073f3549701c300195dd9c7a31e0839.exe	90
PID 1672 wrote to memory of 3728	1672	e641e629b947ccbbf927fefa21a566957073f3549701c300195dd9c7a31e0839.exe	99
PID 1672 wrote to memory of 3728	1672	e641e629b947ccbbf927fefa21a566957073f3549701c300195dd9c7a31e0839.exe	99
PID 1672 wrote to memory of 3728	1672	e641e629b947ccbbf927fefa21a566957073f3549701c300195dd9c7a31e0839.exe	99
PID 1672 wrote to memory of 3728	1672	e641e629b947ccbbf927fefa21a566957073f3549701c300195dd9c7a31e0839.exe	99
PID 1672 wrote to memory of 3728	1672	e641e629b947ccbbf927fefa21a566957073f3549701c300195dd9c7a31e0839.exe	99
PID 1672 wrote to memory of 3728	1672	e641e629b947ccbbf927fefa21a566957073f3549701c300195dd9c7a31e0839.exe	99
PID 1672 wrote to memory of 3728	1672	e641e629b947ccbbf927fefa21a566957073f3549701c300195dd9c7a31e0839.exe	99
PID 1672 wrote to memory of 3728	1672	e641e629b947ccbbf927fefa21a566957073f3549701c300195dd9c7a31e0839.exe	99
PID 1672 wrote to memory of 3728	1672	e641e629b947ccbbf927fefa21a566957073f3549701c300195dd9c7a31e0839.exe	99
PID 1672 wrote to memory of 3728	1672	e641e629b947ccbbf927fefa21a566957073f3549701c300195dd9c7a31e0839.exe	99

C:\Users\Admin\AppData\Local\Temp\e641e629b947ccbbf927fefa21a566957073f3549701c300195dd9c7a31e0839.exe
"C:\Users\Admin\AppData\Local\Temp\e641e629b947ccbbf927fefa21a566957073f3549701c300195dd9c7a31e0839.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4884
- C:\Users\Admin\AppData\Local\Temp\e641e629b947ccbbf927fefa21a566957073f3549701c300195dd9c7a31e0839.exe
  "C:\Users\Admin\AppData\Local\Temp\e641e629b947ccbbf927fefa21a566957073f3549701c300195dd9c7a31e0839.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4496
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\5242545e-23b9-4f30-bc88-1bcf859cd8ca" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:1220
- - C:\Users\Admin\AppData\Local\Temp\e641e629b947ccbbf927fefa21a566957073f3549701c300195dd9c7a31e0839.exe
    "C:\Users\Admin\AppData\Local\Temp\e641e629b947ccbbf927fefa21a566957073f3549701c300195dd9c7a31e0839.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:1672
  - - C:\Users\Admin\AppData\Local\Temp\e641e629b947ccbbf927fefa21a566957073f3549701c300195dd9c7a31e0839.exe
      "C:\Users\Admin\AppData\Local\Temp\e641e629b947ccbbf927fefa21a566957073f3549701c300195dd9c7a31e0839.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      PID:3728
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 3728 -s 568
        5⤵
        Program crash
        
        PID:2204

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 3728 -ip 3728
1⤵
PID:3396

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

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Downloads

C:\Users\Admin\AppData\Local\5242545e-23b9-4f30-bc88-1bcf859cd8ca\e641e629b947ccbbf927fefa21a566957073f3549701c300195dd9c7a31e0839.exe

Filesize
761KB

MD5
d90d3d59896e60d32bcbe02f0e286939

SHA1
a0ba6c2540a70fc1dafd9309c2ef6846b4f74597

SHA256
e641e629b947ccbbf927fefa21a566957073f3549701c300195dd9c7a31e0839

SHA512
19463da0d7c318c48d2e9d13b8c9b6a383cf61110cf4670b431a35f7353e3fc4014354ccfa5da14f09ed59c6a2a873dbad00eaf8ca2b95f0da84d26b85dbe7e7

Download Submit
memory/3728-18-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3728-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3728-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4496-2-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4496-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4496-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4496-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4496-15-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4884-0-0x0000000002250000-0x00000000022E2000-memory.dmp

Filesize
584KB

Download
memory/4884-1-0x00000000022F0000-0x000000000240B000-memory.dmp

Filesize
1.1MB

Download
memory/4884-4-0x0000000002250000-0x00000000022E2000-memory.dmp

Filesize
584KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads