djvu | 4517c6ff1187186a831bef894c9a9e0fed978a60856efbf98fb4d4d33ea263fd

General

Target

4517c6ff1187186a831bef894c9a9e0fed978a60856efbf98fb4d4d33ea263fd.exe
Size

752KB
MD5

cc36e5bb61f06843a16b4fbf071a8d53
SHA1

0035331f3c9a5eb5be9f7db0f3e03b51fab840b3
SHA256

4517c6ff1187186a831bef894c9a9e0fed978a60856efbf98fb4d4d33ea263fd
SHA512

0b3a491d0235d7795804a1453dd0c7a4e60b39575ac4053c9f24742f42c9280a98bfed3bf3ccfd65ff6dd439b9556f50b842b9f62eba252b6d8efecac27551e0
SSDEEP

12288:EstSSKraR6asuDdGTgRz+pGwzx+d0gqrIwW9GEj/nq82iUGKvjysFwzzKVlgWkBJ:xSvaRGGdGTgcWAKGEnYHGgjv5wBher4

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.nztt
offline_id
fe7vbai057v1PzegcJrFdG7DjT3mL5gUtMQkLrt1
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-E4b0Td2MBH 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: 0772JOsie

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 9 IoCs

resource	yara_rule
behavioral1/memory/4088-2-0x0000000003EA0000-0x0000000003FBB000-memory.dmp	family_djvu
behavioral1/memory/2764-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2764-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2764-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2764-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2764-15-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4752-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4752-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4752-23-0x0000000000400000-0x0000000000537000-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-1-5-21-4176143399-3250363947-192774652-1000\Control Panel\International\Geo\Nation	4517c6ff1187186a831bef894c9a9e0fed978a60856efbf98fb4d4d33ea263fd.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
440	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-1-5-21-4176143399-3250363947-192774652-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\e3122e5c-f0a5-4142-aad8-19b4a3c4b158\\4517c6ff1187186a831bef894c9a9e0fed978a60856efbf98fb4d4d33ea263fd.exe\" --AutoStart"	4517c6ff1187186a831bef894c9a9e0fed978a60856efbf98fb4d4d33ea263fd.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
14	api.2ip.ua
15	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4088 set thread context of 2764	4088	4517c6ff1187186a831bef894c9a9e0fed978a60856efbf98fb4d4d33ea263fd.exe	86
PID 4216 set thread context of 4752	4216	4517c6ff1187186a831bef894c9a9e0fed978a60856efbf98fb4d4d33ea263fd.exe	93

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
2480	4752	WerFault.exe	93

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2764	4517c6ff1187186a831bef894c9a9e0fed978a60856efbf98fb4d4d33ea263fd.exe
2764	4517c6ff1187186a831bef894c9a9e0fed978a60856efbf98fb4d4d33ea263fd.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4088 wrote to memory of 2764	4088	4517c6ff1187186a831bef894c9a9e0fed978a60856efbf98fb4d4d33ea263fd.exe	86
PID 4088 wrote to memory of 2764	4088	4517c6ff1187186a831bef894c9a9e0fed978a60856efbf98fb4d4d33ea263fd.exe	86
PID 4088 wrote to memory of 2764	4088	4517c6ff1187186a831bef894c9a9e0fed978a60856efbf98fb4d4d33ea263fd.exe	86
PID 4088 wrote to memory of 2764	4088	4517c6ff1187186a831bef894c9a9e0fed978a60856efbf98fb4d4d33ea263fd.exe	86
PID 4088 wrote to memory of 2764	4088	4517c6ff1187186a831bef894c9a9e0fed978a60856efbf98fb4d4d33ea263fd.exe	86
PID 4088 wrote to memory of 2764	4088	4517c6ff1187186a831bef894c9a9e0fed978a60856efbf98fb4d4d33ea263fd.exe	86
PID 4088 wrote to memory of 2764	4088	4517c6ff1187186a831bef894c9a9e0fed978a60856efbf98fb4d4d33ea263fd.exe	86
PID 4088 wrote to memory of 2764	4088	4517c6ff1187186a831bef894c9a9e0fed978a60856efbf98fb4d4d33ea263fd.exe	86
PID 4088 wrote to memory of 2764	4088	4517c6ff1187186a831bef894c9a9e0fed978a60856efbf98fb4d4d33ea263fd.exe	86
PID 4088 wrote to memory of 2764	4088	4517c6ff1187186a831bef894c9a9e0fed978a60856efbf98fb4d4d33ea263fd.exe	86
PID 2764 wrote to memory of 440	2764	4517c6ff1187186a831bef894c9a9e0fed978a60856efbf98fb4d4d33ea263fd.exe	88
PID 2764 wrote to memory of 440	2764	4517c6ff1187186a831bef894c9a9e0fed978a60856efbf98fb4d4d33ea263fd.exe	88
PID 2764 wrote to memory of 440	2764	4517c6ff1187186a831bef894c9a9e0fed978a60856efbf98fb4d4d33ea263fd.exe	88
PID 2764 wrote to memory of 4216	2764	4517c6ff1187186a831bef894c9a9e0fed978a60856efbf98fb4d4d33ea263fd.exe	89
PID 2764 wrote to memory of 4216	2764	4517c6ff1187186a831bef894c9a9e0fed978a60856efbf98fb4d4d33ea263fd.exe	89
PID 2764 wrote to memory of 4216	2764	4517c6ff1187186a831bef894c9a9e0fed978a60856efbf98fb4d4d33ea263fd.exe	89
PID 4216 wrote to memory of 4752	4216	4517c6ff1187186a831bef894c9a9e0fed978a60856efbf98fb4d4d33ea263fd.exe	93
PID 4216 wrote to memory of 4752	4216	4517c6ff1187186a831bef894c9a9e0fed978a60856efbf98fb4d4d33ea263fd.exe	93
PID 4216 wrote to memory of 4752	4216	4517c6ff1187186a831bef894c9a9e0fed978a60856efbf98fb4d4d33ea263fd.exe	93
PID 4216 wrote to memory of 4752	4216	4517c6ff1187186a831bef894c9a9e0fed978a60856efbf98fb4d4d33ea263fd.exe	93
PID 4216 wrote to memory of 4752	4216	4517c6ff1187186a831bef894c9a9e0fed978a60856efbf98fb4d4d33ea263fd.exe	93
PID 4216 wrote to memory of 4752	4216	4517c6ff1187186a831bef894c9a9e0fed978a60856efbf98fb4d4d33ea263fd.exe	93
PID 4216 wrote to memory of 4752	4216	4517c6ff1187186a831bef894c9a9e0fed978a60856efbf98fb4d4d33ea263fd.exe	93
PID 4216 wrote to memory of 4752	4216	4517c6ff1187186a831bef894c9a9e0fed978a60856efbf98fb4d4d33ea263fd.exe	93
PID 4216 wrote to memory of 4752	4216	4517c6ff1187186a831bef894c9a9e0fed978a60856efbf98fb4d4d33ea263fd.exe	93
PID 4216 wrote to memory of 4752	4216	4517c6ff1187186a831bef894c9a9e0fed978a60856efbf98fb4d4d33ea263fd.exe	93

C:\Users\Admin\AppData\Local\Temp\4517c6ff1187186a831bef894c9a9e0fed978a60856efbf98fb4d4d33ea263fd.exe
"C:\Users\Admin\AppData\Local\Temp\4517c6ff1187186a831bef894c9a9e0fed978a60856efbf98fb4d4d33ea263fd.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4088
- C:\Users\Admin\AppData\Local\Temp\4517c6ff1187186a831bef894c9a9e0fed978a60856efbf98fb4d4d33ea263fd.exe
  "C:\Users\Admin\AppData\Local\Temp\4517c6ff1187186a831bef894c9a9e0fed978a60856efbf98fb4d4d33ea263fd.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2764
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\e3122e5c-f0a5-4142-aad8-19b4a3c4b158" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:440
- - C:\Users\Admin\AppData\Local\Temp\4517c6ff1187186a831bef894c9a9e0fed978a60856efbf98fb4d4d33ea263fd.exe
    "C:\Users\Admin\AppData\Local\Temp\4517c6ff1187186a831bef894c9a9e0fed978a60856efbf98fb4d4d33ea263fd.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:4216
  - - C:\Users\Admin\AppData\Local\Temp\4517c6ff1187186a831bef894c9a9e0fed978a60856efbf98fb4d4d33ea263fd.exe
      "C:\Users\Admin\AppData\Local\Temp\4517c6ff1187186a831bef894c9a9e0fed978a60856efbf98fb4d4d33ea263fd.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      PID:4752
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4752 -s 568
        5⤵
        Program crash
        
        PID:2480

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 4752 -ip 4752
1⤵
PID:4788

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\e3122e5c-f0a5-4142-aad8-19b4a3c4b158\4517c6ff1187186a831bef894c9a9e0fed978a60856efbf98fb4d4d33ea263fd.exe

Filesize
752KB

MD5
cc36e5bb61f06843a16b4fbf071a8d53

SHA1
0035331f3c9a5eb5be9f7db0f3e03b51fab840b3

SHA256
4517c6ff1187186a831bef894c9a9e0fed978a60856efbf98fb4d4d33ea263fd

SHA512
0b3a491d0235d7795804a1453dd0c7a4e60b39575ac4053c9f24742f42c9280a98bfed3bf3ccfd65ff6dd439b9556f50b842b9f62eba252b6d8efecac27551e0

Download Submit
memory/2764-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2764-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2764-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2764-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2764-15-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4088-1-0x0000000003D00000-0x0000000003D97000-memory.dmp

Filesize
604KB

Download
memory/4088-2-0x0000000003EA0000-0x0000000003FBB000-memory.dmp

Filesize
1.1MB

Download
memory/4216-18-0x0000000002260000-0x00000000022FD000-memory.dmp

Filesize
628KB

Download
memory/4752-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4752-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4752-23-0x0000000000400000-0x0000000000537000-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