djvu | 841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87

General

Target

841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87.exe
Size

762KB
MD5

2e1c250639a956a9790f28e8208de685
SHA1

cc7d4e2d6a74b2431b6e53b876f055367d2737f0
SHA256

841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87
SHA512

3ffed2880b73215d53e5f09bf8b277e47dd9e677bde5c8861b7a23c080b5fca5903303f87c75d1de446ddc4f407a00ac994c95745ed774d2d8fab4f0d04ad7d6
SSDEEP

12288:ZxbDQE4JyP20DdHEiJJY8mqgdMBQF7wlw3LQCnweAlcuac5hKgkalGlB:ZNQ1o20DtrYyex6uuBkPb

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.wzqw
offline_id
pGPY4MKNHaEeN9pLKNW37rI0mblzUZFtPsjZ8Ht1
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-E3ktviSmlG 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: 0765zSjfr

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 9 IoCs

resource	yara_rule
behavioral1/memory/2596-2-0x0000000004040000-0x000000000415B000-memory.dmp	family_djvu
behavioral1/memory/840-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/840-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/840-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/840-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/840-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4740-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4740-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4740-25-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
3752	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-1-5-21-1722984668-1829624581-3022101259-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\0248591c-6c31-4add-970e-90dbd14d3e0a\\841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87.exe\" --AutoStart"	841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87.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
3	api.2ip.ua
4	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2596 set thread context of 840	2596	841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87.exe	82
PID 4864 set thread context of 4740	4864	841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87.exe	86

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
1292	4740	WerFault.exe	86

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
840	841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87.exe
840	841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2596 wrote to memory of 840	2596	841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87.exe	82
PID 2596 wrote to memory of 840	2596	841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87.exe	82
PID 2596 wrote to memory of 840	2596	841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87.exe	82
PID 2596 wrote to memory of 840	2596	841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87.exe	82
PID 2596 wrote to memory of 840	2596	841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87.exe	82
PID 2596 wrote to memory of 840	2596	841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87.exe	82
PID 2596 wrote to memory of 840	2596	841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87.exe	82
PID 2596 wrote to memory of 840	2596	841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87.exe	82
PID 2596 wrote to memory of 840	2596	841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87.exe	82
PID 2596 wrote to memory of 840	2596	841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87.exe	82
PID 840 wrote to memory of 3752	840	841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87.exe	83
PID 840 wrote to memory of 3752	840	841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87.exe	83
PID 840 wrote to memory of 3752	840	841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87.exe	83
PID 840 wrote to memory of 4864	840	841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87.exe	84
PID 840 wrote to memory of 4864	840	841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87.exe	84
PID 840 wrote to memory of 4864	840	841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87.exe	84
PID 4864 wrote to memory of 4740	4864	841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87.exe	86
PID 4864 wrote to memory of 4740	4864	841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87.exe	86
PID 4864 wrote to memory of 4740	4864	841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87.exe	86
PID 4864 wrote to memory of 4740	4864	841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87.exe	86
PID 4864 wrote to memory of 4740	4864	841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87.exe	86
PID 4864 wrote to memory of 4740	4864	841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87.exe	86
PID 4864 wrote to memory of 4740	4864	841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87.exe	86
PID 4864 wrote to memory of 4740	4864	841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87.exe	86
PID 4864 wrote to memory of 4740	4864	841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87.exe	86
PID 4864 wrote to memory of 4740	4864	841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87.exe	86

C:\Users\Admin\AppData\Local\Temp\841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87.exe
"C:\Users\Admin\AppData\Local\Temp\841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2596
- C:\Users\Admin\AppData\Local\Temp\841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87.exe
  "C:\Users\Admin\AppData\Local\Temp\841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:840
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\0248591c-6c31-4add-970e-90dbd14d3e0a" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:3752
- - C:\Users\Admin\AppData\Local\Temp\841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87.exe
    "C:\Users\Admin\AppData\Local\Temp\841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:4864
  - - C:\Users\Admin\AppData\Local\Temp\841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87.exe
      "C:\Users\Admin\AppData\Local\Temp\841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      PID:4740
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4740 -s 568
        5⤵
        Program crash
        
        PID:1292

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4740 -ip 4740
1⤵
PID:2260

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\0248591c-6c31-4add-970e-90dbd14d3e0a\841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87.exe

Filesize
762KB

MD5
2e1c250639a956a9790f28e8208de685

SHA1
cc7d4e2d6a74b2431b6e53b876f055367d2737f0

SHA256
841b3295de24b0586adad6161f7a4249809cb0efc4542334c819dcad2a2a1b87

SHA512
3ffed2880b73215d53e5f09bf8b277e47dd9e677bde5c8861b7a23c080b5fca5903303f87c75d1de446ddc4f407a00ac994c95745ed774d2d8fab4f0d04ad7d6

Download Submit
memory/840-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/840-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/840-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/840-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/840-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2596-1-0x0000000003FA0000-0x0000000004039000-memory.dmp

Filesize
612KB

Download
memory/2596-2-0x0000000004040000-0x000000000415B000-memory.dmp

Filesize
1.1MB

Download
memory/4740-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4740-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4740-25-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4864-20-0x00000000024D0000-0x000000000256D000-memory.dmp

Filesize
628KB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads