djvu | 177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39

General

Target

177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39.exe
Size

803KB
MD5

c58aca49341a89e3023bb394651c60af
SHA1

a505024620347186d39d1303985654dade9ee085
SHA256

177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39
SHA512

0c94525a9ed9286d20ce7399b74e056fb93c932431af6cecb6c87927fbef955cbd0634f82834f3b614e710331afffeafc4d5b69b45d9f1db4aa3f055629523e5
SSDEEP

12288:po+oPxj2ee33HI+RuAa+f+Snu3KcdIR9aKUya5/PWswf3vuXsHoe7w8mr8:ihZ217rWT39gCsHoe7wRr8

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.wwpl
offline_id
LtYnlJvK0hICyOCeum6Tv4pbia9jcIGHVgA3Xht1
payload_url
http://colisumy.com/dl/build2.exe

http://zexeq.com/files/1/build3.exe
ransomnote
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rsa_pubkey.plain

Signatures

Detected Djvu ransomware 11 IoCs

resource	yara_rule
behavioral2/memory/1716-2-0x0000000002500000-0x000000000261B000-memory.dmp	family_djvu
behavioral2/memory/2468-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2468-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2468-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2468-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2468-15-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2468-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4712-20-0x0000000002380000-0x0000000002422000-memory.dmp	family_djvu
behavioral2/memory/832-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/832-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/832-25-0x0000000000400000-0x0000000000537000-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-1-5-21-1926387074-3400613176-3566796709-1000\Control Panel\International\Geo\Nation	177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
516	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-1-5-21-1926387074-3400613176-3566796709-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\d0cad8c5-ad90-45bf-9c92-e858e3c70d9a\\177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39.exe\" --AutoStart"	177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39.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
24	api.2ip.ua
23	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1716 set thread context of 2468	1716	177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39.exe	86
PID 4712 set thread context of 832	4712	177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39.exe	90

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
4700	832	WerFault.exe	90

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2468	177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39.exe
2468	177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1716 wrote to memory of 2468	1716	177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39.exe	86
PID 1716 wrote to memory of 2468	1716	177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39.exe	86
PID 1716 wrote to memory of 2468	1716	177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39.exe	86
PID 1716 wrote to memory of 2468	1716	177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39.exe	86
PID 1716 wrote to memory of 2468	1716	177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39.exe	86
PID 1716 wrote to memory of 2468	1716	177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39.exe	86
PID 1716 wrote to memory of 2468	1716	177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39.exe	86
PID 1716 wrote to memory of 2468	1716	177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39.exe	86
PID 1716 wrote to memory of 2468	1716	177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39.exe	86
PID 1716 wrote to memory of 2468	1716	177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39.exe	86
PID 2468 wrote to memory of 516	2468	177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39.exe	87
PID 2468 wrote to memory of 516	2468	177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39.exe	87
PID 2468 wrote to memory of 516	2468	177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39.exe	87
PID 2468 wrote to memory of 4712	2468	177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39.exe	88
PID 2468 wrote to memory of 4712	2468	177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39.exe	88
PID 2468 wrote to memory of 4712	2468	177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39.exe	88
PID 4712 wrote to memory of 832	4712	177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39.exe	90
PID 4712 wrote to memory of 832	4712	177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39.exe	90
PID 4712 wrote to memory of 832	4712	177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39.exe	90
PID 4712 wrote to memory of 832	4712	177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39.exe	90
PID 4712 wrote to memory of 832	4712	177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39.exe	90
PID 4712 wrote to memory of 832	4712	177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39.exe	90
PID 4712 wrote to memory of 832	4712	177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39.exe	90
PID 4712 wrote to memory of 832	4712	177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39.exe	90
PID 4712 wrote to memory of 832	4712	177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39.exe	90
PID 4712 wrote to memory of 832	4712	177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39.exe	90

C:\Users\Admin\AppData\Local\Temp\177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39.exe
"C:\Users\Admin\AppData\Local\Temp\177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1716
- C:\Users\Admin\AppData\Local\Temp\177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39.exe
  "C:\Users\Admin\AppData\Local\Temp\177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2468
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\d0cad8c5-ad90-45bf-9c92-e858e3c70d9a" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:516
- - C:\Users\Admin\AppData\Local\Temp\177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39.exe
    "C:\Users\Admin\AppData\Local\Temp\177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:4712
  - - C:\Users\Admin\AppData\Local\Temp\177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39.exe
      "C:\Users\Admin\AppData\Local\Temp\177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      PID:832
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 832 -s 576
        5⤵
        Program crash
        
        PID:4700

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 832 -ip 832
1⤵
PID:2904

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\d0cad8c5-ad90-45bf-9c92-e858e3c70d9a\177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39.exe

Filesize
803KB

MD5
c58aca49341a89e3023bb394651c60af

SHA1
a505024620347186d39d1303985654dade9ee085

SHA256
177f83b80d1b68bc4aaebd41d9a13f5289f36bddf684e72d01afa8e1b82e6f39

SHA512
0c94525a9ed9286d20ce7399b74e056fb93c932431af6cecb6c87927fbef955cbd0634f82834f3b614e710331afffeafc4d5b69b45d9f1db4aa3f055629523e5

Download Submit
memory/832-25-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/832-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/832-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1716-2-0x0000000002500000-0x000000000261B000-memory.dmp

Filesize
1.1MB

Download
memory/1716-1-0x0000000002410000-0x00000000024A4000-memory.dmp

Filesize
592KB

Download
memory/2468-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2468-15-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2468-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2468-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2468-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2468-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4712-20-0x0000000002380000-0x0000000002422000-memory.dmp

Filesize
648KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads