djvu | 925ac89ea86649d54a8f12badac5669be2b8814cebeb762152f197d38f540eca

General

Target

925ac89ea86649d54a8f12badac5669be2b8814cebeb762152f197d38f540eca.exe
Size

804KB
MD5

5e23740624c34ff4fe5352b30d0a9df6
SHA1

69e1b08ff80e574599ae006f21b69becc024a49e
SHA256

925ac89ea86649d54a8f12badac5669be2b8814cebeb762152f197d38f540eca
SHA512

7acc3454076d651e2b1ceea6cead2e1dd0320743259baddac556bb83150b65465ad0ec0308c98a7bcf66e721dfa2986277238d6808f05627e75a99ba2f574316
SSDEEP

12288:x4J9jIM+UhbYVsinTGYvSTqi1z6dD5a6mp9ekDvPFYPfAFcqSTYhxPh/TmXtORo:UaKgsijGpz6ddrS9eCvofVqSTqZ/TWR

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.ttwq
offline_id
9qw1wmu1ty4GEiHZdxilHPjCyX6ENKTotjt6MIt1
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-4vhLUot4Kz 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: 0798JOsie

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 9 IoCs

resource	yara_rule
behavioral1/memory/4532-2-0x0000000004060000-0x000000000417B000-memory.dmp	family_djvu
behavioral1/memory/5020-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/5020-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/5020-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/5020-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/5020-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/536-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/536-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/536-25-0x0000000000400000-0x0000000000537000-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-1-5-21-1045988481-1457812719-2617974652-1000\Control Panel\International\Geo\Nation	925ac89ea86649d54a8f12badac5669be2b8814cebeb762152f197d38f540eca.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
1728	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-1-5-21-1045988481-1457812719-2617974652-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\766071e2-9d86-435e-acba-ec1e40d50280\\925ac89ea86649d54a8f12badac5669be2b8814cebeb762152f197d38f540eca.exe\" --AutoStart"	925ac89ea86649d54a8f12badac5669be2b8814cebeb762152f197d38f540eca.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
8	api.2ip.ua
7	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4532 set thread context of 5020	4532	925ac89ea86649d54a8f12badac5669be2b8814cebeb762152f197d38f540eca.exe	85
PID 2396 set thread context of 536	2396	925ac89ea86649d54a8f12badac5669be2b8814cebeb762152f197d38f540eca.exe	98

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
4268	536	WerFault.exe	98

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
5020	925ac89ea86649d54a8f12badac5669be2b8814cebeb762152f197d38f540eca.exe
5020	925ac89ea86649d54a8f12badac5669be2b8814cebeb762152f197d38f540eca.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4532 wrote to memory of 5020	4532	925ac89ea86649d54a8f12badac5669be2b8814cebeb762152f197d38f540eca.exe	85
PID 4532 wrote to memory of 5020	4532	925ac89ea86649d54a8f12badac5669be2b8814cebeb762152f197d38f540eca.exe	85
PID 4532 wrote to memory of 5020	4532	925ac89ea86649d54a8f12badac5669be2b8814cebeb762152f197d38f540eca.exe	85
PID 4532 wrote to memory of 5020	4532	925ac89ea86649d54a8f12badac5669be2b8814cebeb762152f197d38f540eca.exe	85
PID 4532 wrote to memory of 5020	4532	925ac89ea86649d54a8f12badac5669be2b8814cebeb762152f197d38f540eca.exe	85
PID 4532 wrote to memory of 5020	4532	925ac89ea86649d54a8f12badac5669be2b8814cebeb762152f197d38f540eca.exe	85
PID 4532 wrote to memory of 5020	4532	925ac89ea86649d54a8f12badac5669be2b8814cebeb762152f197d38f540eca.exe	85
PID 4532 wrote to memory of 5020	4532	925ac89ea86649d54a8f12badac5669be2b8814cebeb762152f197d38f540eca.exe	85
PID 4532 wrote to memory of 5020	4532	925ac89ea86649d54a8f12badac5669be2b8814cebeb762152f197d38f540eca.exe	85
PID 4532 wrote to memory of 5020	4532	925ac89ea86649d54a8f12badac5669be2b8814cebeb762152f197d38f540eca.exe	85
PID 5020 wrote to memory of 1728	5020	925ac89ea86649d54a8f12badac5669be2b8814cebeb762152f197d38f540eca.exe	95
PID 5020 wrote to memory of 1728	5020	925ac89ea86649d54a8f12badac5669be2b8814cebeb762152f197d38f540eca.exe	95
PID 5020 wrote to memory of 1728	5020	925ac89ea86649d54a8f12badac5669be2b8814cebeb762152f197d38f540eca.exe	95
PID 5020 wrote to memory of 2396	5020	925ac89ea86649d54a8f12badac5669be2b8814cebeb762152f197d38f540eca.exe	96
PID 5020 wrote to memory of 2396	5020	925ac89ea86649d54a8f12badac5669be2b8814cebeb762152f197d38f540eca.exe	96
PID 5020 wrote to memory of 2396	5020	925ac89ea86649d54a8f12badac5669be2b8814cebeb762152f197d38f540eca.exe	96
PID 2396 wrote to memory of 536	2396	925ac89ea86649d54a8f12badac5669be2b8814cebeb762152f197d38f540eca.exe	98
PID 2396 wrote to memory of 536	2396	925ac89ea86649d54a8f12badac5669be2b8814cebeb762152f197d38f540eca.exe	98
PID 2396 wrote to memory of 536	2396	925ac89ea86649d54a8f12badac5669be2b8814cebeb762152f197d38f540eca.exe	98
PID 2396 wrote to memory of 536	2396	925ac89ea86649d54a8f12badac5669be2b8814cebeb762152f197d38f540eca.exe	98
PID 2396 wrote to memory of 536	2396	925ac89ea86649d54a8f12badac5669be2b8814cebeb762152f197d38f540eca.exe	98
PID 2396 wrote to memory of 536	2396	925ac89ea86649d54a8f12badac5669be2b8814cebeb762152f197d38f540eca.exe	98
PID 2396 wrote to memory of 536	2396	925ac89ea86649d54a8f12badac5669be2b8814cebeb762152f197d38f540eca.exe	98
PID 2396 wrote to memory of 536	2396	925ac89ea86649d54a8f12badac5669be2b8814cebeb762152f197d38f540eca.exe	98
PID 2396 wrote to memory of 536	2396	925ac89ea86649d54a8f12badac5669be2b8814cebeb762152f197d38f540eca.exe	98
PID 2396 wrote to memory of 536	2396	925ac89ea86649d54a8f12badac5669be2b8814cebeb762152f197d38f540eca.exe	98

C:\Users\Admin\AppData\Local\Temp\925ac89ea86649d54a8f12badac5669be2b8814cebeb762152f197d38f540eca.exe
"C:\Users\Admin\AppData\Local\Temp\925ac89ea86649d54a8f12badac5669be2b8814cebeb762152f197d38f540eca.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4532
- C:\Users\Admin\AppData\Local\Temp\925ac89ea86649d54a8f12badac5669be2b8814cebeb762152f197d38f540eca.exe
  "C:\Users\Admin\AppData\Local\Temp\925ac89ea86649d54a8f12badac5669be2b8814cebeb762152f197d38f540eca.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:5020
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\766071e2-9d86-435e-acba-ec1e40d50280" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:1728
- - C:\Users\Admin\AppData\Local\Temp\925ac89ea86649d54a8f12badac5669be2b8814cebeb762152f197d38f540eca.exe
    "C:\Users\Admin\AppData\Local\Temp\925ac89ea86649d54a8f12badac5669be2b8814cebeb762152f197d38f540eca.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2396
  - - C:\Users\Admin\AppData\Local\Temp\925ac89ea86649d54a8f12badac5669be2b8814cebeb762152f197d38f540eca.exe
      "C:\Users\Admin\AppData\Local\Temp\925ac89ea86649d54a8f12badac5669be2b8814cebeb762152f197d38f540eca.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      PID:536
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 536 -s 568
        5⤵
        Program crash
        
        PID:4268

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 536 -ip 536
1⤵
PID:4396

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\766071e2-9d86-435e-acba-ec1e40d50280\925ac89ea86649d54a8f12badac5669be2b8814cebeb762152f197d38f540eca.exe

Filesize
804KB

MD5
5e23740624c34ff4fe5352b30d0a9df6

SHA1
69e1b08ff80e574599ae006f21b69becc024a49e

SHA256
925ac89ea86649d54a8f12badac5669be2b8814cebeb762152f197d38f540eca

SHA512
7acc3454076d651e2b1ceea6cead2e1dd0320743259baddac556bb83150b65465ad0ec0308c98a7bcf66e721dfa2986277238d6808f05627e75a99ba2f574316

Download Submit
memory/536-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/536-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/536-25-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2396-20-0x0000000003EC0000-0x0000000003F61000-memory.dmp

Filesize
644KB

Download
memory/4532-1-0x0000000003FC0000-0x0000000004054000-memory.dmp

Filesize
592KB

Download
memory/4532-2-0x0000000004060000-0x000000000417B000-memory.dmp

Filesize
1.1MB

Download
memory/5020-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5020-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5020-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5020-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5020-17-0x0000000000400000-0x0000000000537000-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