djvu | 8b02bdf2eff1aa69ac4e675ea9a7c3e6cca51d6e09d0f9bb713ee065cf870588

General

Target

8b02bdf2eff1aa69ac4e675ea9a7c3e6cca51d6e09d0f9bb713ee065cf870588.exe
Size

741KB
MD5

974760d964c3ae6f56343e014c6c1cde
SHA1

9da8e2dd24adfd8b5e866e809f795684772715d7
SHA256

8b02bdf2eff1aa69ac4e675ea9a7c3e6cca51d6e09d0f9bb713ee065cf870588
SHA512

ed807061f50c545a47aa2e8e44886f0697d2927a45c575fdd5d7180b96cda1f8ba0cdf0cb1e99dbba61d8dcb1e519118a2e64d0f7034f70090c0a52104c27b4a
SSDEEP

12288:a98WlwDXvsqD0w0GykHvVvEoPuq5QirEhjRnm1pH8EqXmI:a9/20TGtpEWGirSdnmDlqx

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.ithh
offline_id
9FgVtzPuDnE9NZWeLG9q9D2SjzVyIqJJ4jFNKXt1
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 10 IoCs

resource	yara_rule
behavioral1/memory/2736-2-0x0000000002360000-0x000000000247B000-memory.dmp	family_djvu
behavioral1/memory/1180-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1180-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1180-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1180-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1180-15-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1652-18-0x00000000021F0000-0x0000000002285000-memory.dmp	family_djvu
behavioral1/memory/1244-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1244-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1244-23-0x0000000000400000-0x0000000000537000-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-1-5-21-1574508946-349927670-1185736483-1000\Control Panel\International\Geo\Nation	8b02bdf2eff1aa69ac4e675ea9a7c3e6cca51d6e09d0f9bb713ee065cf870588.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
920	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-1-5-21-1574508946-349927670-1185736483-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\cb05d049-d5b3-41e5-b2b8-9a9d54dd20d2\\8b02bdf2eff1aa69ac4e675ea9a7c3e6cca51d6e09d0f9bb713ee065cf870588.exe\" --AutoStart"	8b02bdf2eff1aa69ac4e675ea9a7c3e6cca51d6e09d0f9bb713ee065cf870588.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
7	api.2ip.ua
8	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2736 set thread context of 1180	2736	8b02bdf2eff1aa69ac4e675ea9a7c3e6cca51d6e09d0f9bb713ee065cf870588.exe	84
PID 1652 set thread context of 1244	1652	8b02bdf2eff1aa69ac4e675ea9a7c3e6cca51d6e09d0f9bb713ee065cf870588.exe	88

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
1488	1244	WerFault.exe	88

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1180	8b02bdf2eff1aa69ac4e675ea9a7c3e6cca51d6e09d0f9bb713ee065cf870588.exe
1180	8b02bdf2eff1aa69ac4e675ea9a7c3e6cca51d6e09d0f9bb713ee065cf870588.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2736 wrote to memory of 1180	2736	8b02bdf2eff1aa69ac4e675ea9a7c3e6cca51d6e09d0f9bb713ee065cf870588.exe	84
PID 2736 wrote to memory of 1180	2736	8b02bdf2eff1aa69ac4e675ea9a7c3e6cca51d6e09d0f9bb713ee065cf870588.exe	84
PID 2736 wrote to memory of 1180	2736	8b02bdf2eff1aa69ac4e675ea9a7c3e6cca51d6e09d0f9bb713ee065cf870588.exe	84
PID 2736 wrote to memory of 1180	2736	8b02bdf2eff1aa69ac4e675ea9a7c3e6cca51d6e09d0f9bb713ee065cf870588.exe	84
PID 2736 wrote to memory of 1180	2736	8b02bdf2eff1aa69ac4e675ea9a7c3e6cca51d6e09d0f9bb713ee065cf870588.exe	84
PID 2736 wrote to memory of 1180	2736	8b02bdf2eff1aa69ac4e675ea9a7c3e6cca51d6e09d0f9bb713ee065cf870588.exe	84
PID 2736 wrote to memory of 1180	2736	8b02bdf2eff1aa69ac4e675ea9a7c3e6cca51d6e09d0f9bb713ee065cf870588.exe	84
PID 2736 wrote to memory of 1180	2736	8b02bdf2eff1aa69ac4e675ea9a7c3e6cca51d6e09d0f9bb713ee065cf870588.exe	84
PID 2736 wrote to memory of 1180	2736	8b02bdf2eff1aa69ac4e675ea9a7c3e6cca51d6e09d0f9bb713ee065cf870588.exe	84
PID 2736 wrote to memory of 1180	2736	8b02bdf2eff1aa69ac4e675ea9a7c3e6cca51d6e09d0f9bb713ee065cf870588.exe	84
PID 1180 wrote to memory of 920	1180	8b02bdf2eff1aa69ac4e675ea9a7c3e6cca51d6e09d0f9bb713ee065cf870588.exe	85
PID 1180 wrote to memory of 920	1180	8b02bdf2eff1aa69ac4e675ea9a7c3e6cca51d6e09d0f9bb713ee065cf870588.exe	85
PID 1180 wrote to memory of 920	1180	8b02bdf2eff1aa69ac4e675ea9a7c3e6cca51d6e09d0f9bb713ee065cf870588.exe	85
PID 1180 wrote to memory of 1652	1180	8b02bdf2eff1aa69ac4e675ea9a7c3e6cca51d6e09d0f9bb713ee065cf870588.exe	86
PID 1180 wrote to memory of 1652	1180	8b02bdf2eff1aa69ac4e675ea9a7c3e6cca51d6e09d0f9bb713ee065cf870588.exe	86
PID 1180 wrote to memory of 1652	1180	8b02bdf2eff1aa69ac4e675ea9a7c3e6cca51d6e09d0f9bb713ee065cf870588.exe	86
PID 1652 wrote to memory of 1244	1652	8b02bdf2eff1aa69ac4e675ea9a7c3e6cca51d6e09d0f9bb713ee065cf870588.exe	88
PID 1652 wrote to memory of 1244	1652	8b02bdf2eff1aa69ac4e675ea9a7c3e6cca51d6e09d0f9bb713ee065cf870588.exe	88
PID 1652 wrote to memory of 1244	1652	8b02bdf2eff1aa69ac4e675ea9a7c3e6cca51d6e09d0f9bb713ee065cf870588.exe	88
PID 1652 wrote to memory of 1244	1652	8b02bdf2eff1aa69ac4e675ea9a7c3e6cca51d6e09d0f9bb713ee065cf870588.exe	88
PID 1652 wrote to memory of 1244	1652	8b02bdf2eff1aa69ac4e675ea9a7c3e6cca51d6e09d0f9bb713ee065cf870588.exe	88
PID 1652 wrote to memory of 1244	1652	8b02bdf2eff1aa69ac4e675ea9a7c3e6cca51d6e09d0f9bb713ee065cf870588.exe	88
PID 1652 wrote to memory of 1244	1652	8b02bdf2eff1aa69ac4e675ea9a7c3e6cca51d6e09d0f9bb713ee065cf870588.exe	88
PID 1652 wrote to memory of 1244	1652	8b02bdf2eff1aa69ac4e675ea9a7c3e6cca51d6e09d0f9bb713ee065cf870588.exe	88
PID 1652 wrote to memory of 1244	1652	8b02bdf2eff1aa69ac4e675ea9a7c3e6cca51d6e09d0f9bb713ee065cf870588.exe	88
PID 1652 wrote to memory of 1244	1652	8b02bdf2eff1aa69ac4e675ea9a7c3e6cca51d6e09d0f9bb713ee065cf870588.exe	88

C:\Users\Admin\AppData\Local\Temp\8b02bdf2eff1aa69ac4e675ea9a7c3e6cca51d6e09d0f9bb713ee065cf870588.exe
"C:\Users\Admin\AppData\Local\Temp\8b02bdf2eff1aa69ac4e675ea9a7c3e6cca51d6e09d0f9bb713ee065cf870588.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2736
- C:\Users\Admin\AppData\Local\Temp\8b02bdf2eff1aa69ac4e675ea9a7c3e6cca51d6e09d0f9bb713ee065cf870588.exe
  "C:\Users\Admin\AppData\Local\Temp\8b02bdf2eff1aa69ac4e675ea9a7c3e6cca51d6e09d0f9bb713ee065cf870588.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1180
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\cb05d049-d5b3-41e5-b2b8-9a9d54dd20d2" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:920
- - C:\Users\Admin\AppData\Local\Temp\8b02bdf2eff1aa69ac4e675ea9a7c3e6cca51d6e09d0f9bb713ee065cf870588.exe
    "C:\Users\Admin\AppData\Local\Temp\8b02bdf2eff1aa69ac4e675ea9a7c3e6cca51d6e09d0f9bb713ee065cf870588.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:1652
  - - C:\Users\Admin\AppData\Local\Temp\8b02bdf2eff1aa69ac4e675ea9a7c3e6cca51d6e09d0f9bb713ee065cf870588.exe
      "C:\Users\Admin\AppData\Local\Temp\8b02bdf2eff1aa69ac4e675ea9a7c3e6cca51d6e09d0f9bb713ee065cf870588.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      PID:1244
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 1244 -s 572
        5⤵
        Program crash
        
        PID:1488

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 196 -p 1244 -ip 1244
1⤵
PID:4852

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\cb05d049-d5b3-41e5-b2b8-9a9d54dd20d2\8b02bdf2eff1aa69ac4e675ea9a7c3e6cca51d6e09d0f9bb713ee065cf870588.exe

Filesize
741KB

MD5
974760d964c3ae6f56343e014c6c1cde

SHA1
9da8e2dd24adfd8b5e866e809f795684772715d7

SHA256
8b02bdf2eff1aa69ac4e675ea9a7c3e6cca51d6e09d0f9bb713ee065cf870588

SHA512
ed807061f50c545a47aa2e8e44886f0697d2927a45c575fdd5d7180b96cda1f8ba0cdf0cb1e99dbba61d8dcb1e519118a2e64d0f7034f70090c0a52104c27b4a

Download Submit
memory/1180-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1180-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1180-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1180-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1180-15-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1244-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1244-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1244-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1652-18-0x00000000021F0000-0x0000000002285000-memory.dmp

Filesize
596KB

Download
memory/2736-1-0x00000000022C0000-0x000000000235E000-memory.dmp

Filesize
632KB

Download
memory/2736-2-0x0000000002360000-0x000000000247B000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads