djvu | 96c262872b531486a0226d87f96bf8a9eaa7e21b5c1831654cf558639ab05017

General

Target

96c262872b531486a0226d87f96bf8a9eaa7e21b5c1831654cf558639ab05017.exe
Size

760KB
MD5

92c321d6abe98a147813f10a7b144586
SHA1

56ca43ec0f49ebbe2aa2f84aa040e93d687a19e5
SHA256

96c262872b531486a0226d87f96bf8a9eaa7e21b5c1831654cf558639ab05017
SHA512

3ee1d1d9e6761303656508dea8b6f9462a7de4af0e86e5e955aadb86bfbf287591df3319206e664f2fdfcb1c6898ae57fb91555f22520a19dda95ee8f72e8af8
SSDEEP

12288:Z2glWvyxYM+quSEgZ+D7rzHH+VwFIxCg0TF51pwCeJ6vL0BQ2KSa:ZJWvCEgZ+vAwqxgpEyLeQ2KS

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.oopl
offline_id
dhL6XvokZotUzL67Na5WfNIBufODsob7eYc3mzt1
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 9 IoCs

resource	yara_rule
behavioral2/memory/928-2-0x0000000002600000-0x000000000271B000-memory.dmp	family_djvu
behavioral2/memory/1224-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1224-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1224-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1224-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1224-15-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/796-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/796-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/796-23-0x0000000000400000-0x0000000000537000-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-1-5-21-1141987721-3945596982-3297311814-1000\Control Panel\International\Geo\Nation	96c262872b531486a0226d87f96bf8a9eaa7e21b5c1831654cf558639ab05017.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2168	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-1-5-21-1141987721-3945596982-3297311814-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\7993d280-32d4-4763-b9a8-47beae5cf131\\96c262872b531486a0226d87f96bf8a9eaa7e21b5c1831654cf558639ab05017.exe\" --AutoStart"	96c262872b531486a0226d87f96bf8a9eaa7e21b5c1831654cf558639ab05017.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 928 set thread context of 1224	928	96c262872b531486a0226d87f96bf8a9eaa7e21b5c1831654cf558639ab05017.exe	86
PID 2200 set thread context of 796	2200	96c262872b531486a0226d87f96bf8a9eaa7e21b5c1831654cf558639ab05017.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
716	796	WerFault.exe	93

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1224	96c262872b531486a0226d87f96bf8a9eaa7e21b5c1831654cf558639ab05017.exe
1224	96c262872b531486a0226d87f96bf8a9eaa7e21b5c1831654cf558639ab05017.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 928 wrote to memory of 1224	928	96c262872b531486a0226d87f96bf8a9eaa7e21b5c1831654cf558639ab05017.exe	86
PID 928 wrote to memory of 1224	928	96c262872b531486a0226d87f96bf8a9eaa7e21b5c1831654cf558639ab05017.exe	86
PID 928 wrote to memory of 1224	928	96c262872b531486a0226d87f96bf8a9eaa7e21b5c1831654cf558639ab05017.exe	86
PID 928 wrote to memory of 1224	928	96c262872b531486a0226d87f96bf8a9eaa7e21b5c1831654cf558639ab05017.exe	86
PID 928 wrote to memory of 1224	928	96c262872b531486a0226d87f96bf8a9eaa7e21b5c1831654cf558639ab05017.exe	86
PID 928 wrote to memory of 1224	928	96c262872b531486a0226d87f96bf8a9eaa7e21b5c1831654cf558639ab05017.exe	86
PID 928 wrote to memory of 1224	928	96c262872b531486a0226d87f96bf8a9eaa7e21b5c1831654cf558639ab05017.exe	86
PID 928 wrote to memory of 1224	928	96c262872b531486a0226d87f96bf8a9eaa7e21b5c1831654cf558639ab05017.exe	86
PID 928 wrote to memory of 1224	928	96c262872b531486a0226d87f96bf8a9eaa7e21b5c1831654cf558639ab05017.exe	86
PID 928 wrote to memory of 1224	928	96c262872b531486a0226d87f96bf8a9eaa7e21b5c1831654cf558639ab05017.exe	86
PID 1224 wrote to memory of 2168	1224	96c262872b531486a0226d87f96bf8a9eaa7e21b5c1831654cf558639ab05017.exe	89
PID 1224 wrote to memory of 2168	1224	96c262872b531486a0226d87f96bf8a9eaa7e21b5c1831654cf558639ab05017.exe	89
PID 1224 wrote to memory of 2168	1224	96c262872b531486a0226d87f96bf8a9eaa7e21b5c1831654cf558639ab05017.exe	89
PID 1224 wrote to memory of 2200	1224	96c262872b531486a0226d87f96bf8a9eaa7e21b5c1831654cf558639ab05017.exe	90
PID 1224 wrote to memory of 2200	1224	96c262872b531486a0226d87f96bf8a9eaa7e21b5c1831654cf558639ab05017.exe	90
PID 1224 wrote to memory of 2200	1224	96c262872b531486a0226d87f96bf8a9eaa7e21b5c1831654cf558639ab05017.exe	90
PID 2200 wrote to memory of 796	2200	96c262872b531486a0226d87f96bf8a9eaa7e21b5c1831654cf558639ab05017.exe	93
PID 2200 wrote to memory of 796	2200	96c262872b531486a0226d87f96bf8a9eaa7e21b5c1831654cf558639ab05017.exe	93
PID 2200 wrote to memory of 796	2200	96c262872b531486a0226d87f96bf8a9eaa7e21b5c1831654cf558639ab05017.exe	93
PID 2200 wrote to memory of 796	2200	96c262872b531486a0226d87f96bf8a9eaa7e21b5c1831654cf558639ab05017.exe	93
PID 2200 wrote to memory of 796	2200	96c262872b531486a0226d87f96bf8a9eaa7e21b5c1831654cf558639ab05017.exe	93
PID 2200 wrote to memory of 796	2200	96c262872b531486a0226d87f96bf8a9eaa7e21b5c1831654cf558639ab05017.exe	93
PID 2200 wrote to memory of 796	2200	96c262872b531486a0226d87f96bf8a9eaa7e21b5c1831654cf558639ab05017.exe	93
PID 2200 wrote to memory of 796	2200	96c262872b531486a0226d87f96bf8a9eaa7e21b5c1831654cf558639ab05017.exe	93
PID 2200 wrote to memory of 796	2200	96c262872b531486a0226d87f96bf8a9eaa7e21b5c1831654cf558639ab05017.exe	93
PID 2200 wrote to memory of 796	2200	96c262872b531486a0226d87f96bf8a9eaa7e21b5c1831654cf558639ab05017.exe	93

C:\Users\Admin\AppData\Local\Temp\96c262872b531486a0226d87f96bf8a9eaa7e21b5c1831654cf558639ab05017.exe
"C:\Users\Admin\AppData\Local\Temp\96c262872b531486a0226d87f96bf8a9eaa7e21b5c1831654cf558639ab05017.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:928
- C:\Users\Admin\AppData\Local\Temp\96c262872b531486a0226d87f96bf8a9eaa7e21b5c1831654cf558639ab05017.exe
  "C:\Users\Admin\AppData\Local\Temp\96c262872b531486a0226d87f96bf8a9eaa7e21b5c1831654cf558639ab05017.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1224
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\7993d280-32d4-4763-b9a8-47beae5cf131" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:2168
- - C:\Users\Admin\AppData\Local\Temp\96c262872b531486a0226d87f96bf8a9eaa7e21b5c1831654cf558639ab05017.exe
    "C:\Users\Admin\AppData\Local\Temp\96c262872b531486a0226d87f96bf8a9eaa7e21b5c1831654cf558639ab05017.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2200
  - - C:\Users\Admin\AppData\Local\Temp\96c262872b531486a0226d87f96bf8a9eaa7e21b5c1831654cf558639ab05017.exe
      "C:\Users\Admin\AppData\Local\Temp\96c262872b531486a0226d87f96bf8a9eaa7e21b5c1831654cf558639ab05017.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      PID:796
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 796 -s 568
        5⤵
        Program crash
        
        PID:716

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 796 -ip 796
1⤵
PID:2192

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\7993d280-32d4-4763-b9a8-47beae5cf131\96c262872b531486a0226d87f96bf8a9eaa7e21b5c1831654cf558639ab05017.exe

Filesize
760KB

MD5
92c321d6abe98a147813f10a7b144586

SHA1
56ca43ec0f49ebbe2aa2f84aa040e93d687a19e5

SHA256
96c262872b531486a0226d87f96bf8a9eaa7e21b5c1831654cf558639ab05017

SHA512
3ee1d1d9e6761303656508dea8b6f9462a7de4af0e86e5e955aadb86bfbf287591df3319206e664f2fdfcb1c6898ae57fb91555f22520a19dda95ee8f72e8af8

Download Submit
memory/796-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/796-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/796-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/928-1-0x0000000002560000-0x00000000025F6000-memory.dmp

Filesize
600KB

Download
memory/928-2-0x0000000002600000-0x000000000271B000-memory.dmp

Filesize
1.1MB

Download
memory/1224-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1224-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1224-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1224-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1224-15-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2200-18-0x00000000023E0000-0x0000000002473000-memory.dmp

Filesize
588KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads