djvu | 0bdb5e571aefdfb8c27968b20aee1dbf0ec2ea1124f49efeec79a325f010923b

General

Target

2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe
Size

809KB
MD5

2f2dec2988f4a4984494b55154b09bd8
SHA1

89f05debffdf11fa7c0761698067e59afa08375b
SHA256

0bdb5e571aefdfb8c27968b20aee1dbf0ec2ea1124f49efeec79a325f010923b
SHA512

e0407480fb45d76442baec48ecc74a49ef6a19e718e35dc605538e5eb05a46c4e96ed4a0bac076be77e8fbe727e1ddb01f9eb7d7bdfff17358eed136f2dd1b02
SSDEEP

24576:+uRdnQWxsSK0qz9ArzAEK0vz5W4MHwW2+836L:+uDxBqz9av/t7fWf

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://securebiz.org/fhsgtsspen6/get.php

Attributes

extension
.tisc
offline_id
uFHwN7bjwCkJEeUg8JHISzLqrwudidH8XsPzHDt1
payload_url
http://znpst.top/dl/build2.exe

http://securebiz.org/files/1/build3.exe
ransomnote
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rsa_pubkey.plain

Signatures

Detected Djvu ransomware 9 IoCs

resource	yara_rule
behavioral2/memory/2576-2-0x0000000000930000-0x0000000000A4B000-memory.dmp	family_djvu
behavioral2/memory/2648-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2648-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2648-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2648-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2648-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3520-25-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3520-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3520-26-0x0000000000400000-0x0000000000537000-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-1-5-21-1403246978-718555486-3105247137-1000\Control Panel\International\Geo\Nation	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
1548	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-1-5-21-1403246978-718555486-3105247137-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\7d350c89-b767-4112-ac2e-91c21ceb7933\\2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe\" --AutoStart"	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.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
10	api.2ip.ua
11	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2576 set thread context of 2648	2576	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	87
PID 2432 set thread context of 3520	2432	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	91

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
2180	3520	WerFault.exe	91

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2648	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe
2648	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2576 wrote to memory of 2648	2576	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	87
PID 2576 wrote to memory of 2648	2576	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	87
PID 2576 wrote to memory of 2648	2576	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	87
PID 2576 wrote to memory of 2648	2576	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	87
PID 2576 wrote to memory of 2648	2576	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	87
PID 2576 wrote to memory of 2648	2576	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	87
PID 2576 wrote to memory of 2648	2576	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	87
PID 2576 wrote to memory of 2648	2576	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	87
PID 2576 wrote to memory of 2648	2576	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	87
PID 2576 wrote to memory of 2648	2576	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	87
PID 2648 wrote to memory of 1548	2648	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	88
PID 2648 wrote to memory of 1548	2648	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	88
PID 2648 wrote to memory of 1548	2648	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	88
PID 2648 wrote to memory of 2432	2648	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	89
PID 2648 wrote to memory of 2432	2648	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	89
PID 2648 wrote to memory of 2432	2648	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	89
PID 2432 wrote to memory of 3520	2432	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	91
PID 2432 wrote to memory of 3520	2432	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	91
PID 2432 wrote to memory of 3520	2432	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	91
PID 2432 wrote to memory of 3520	2432	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	91
PID 2432 wrote to memory of 3520	2432	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	91
PID 2432 wrote to memory of 3520	2432	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	91
PID 2432 wrote to memory of 3520	2432	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	91
PID 2432 wrote to memory of 3520	2432	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	91
PID 2432 wrote to memory of 3520	2432	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	91
PID 2432 wrote to memory of 3520	2432	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	91

C:\Users\Admin\AppData\Local\Temp\2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2576
- C:\Users\Admin\AppData\Local\Temp\2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2648
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\7d350c89-b767-4112-ac2e-91c21ceb7933" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:1548
- - C:\Users\Admin\AppData\Local\Temp\2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2432
  - - C:\Users\Admin\AppData\Local\Temp\2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      PID:3520
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 3520 -s 568
        5⤵
        Program crash
        
        PID:2180

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 3520 -ip 3520
1⤵
PID:1492

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\7d350c89-b767-4112-ac2e-91c21ceb7933\2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe

Filesize
809KB

MD5
2f2dec2988f4a4984494b55154b09bd8

SHA1
89f05debffdf11fa7c0761698067e59afa08375b

SHA256
0bdb5e571aefdfb8c27968b20aee1dbf0ec2ea1124f49efeec79a325f010923b

SHA512
e0407480fb45d76442baec48ecc74a49ef6a19e718e35dc605538e5eb05a46c4e96ed4a0bac076be77e8fbe727e1ddb01f9eb7d7bdfff17358eed136f2dd1b02

Download Submit
memory/2432-29-0x0000000000400000-0x00000000004D8000-memory.dmp

Filesize
864KB

Download
memory/2432-23-0x0000000000400000-0x00000000004D8000-memory.dmp

Filesize
864KB

Download
memory/2576-2-0x0000000000930000-0x0000000000A4B000-memory.dmp

Filesize
1.1MB

Download
memory/2576-1-0x00000000004E0000-0x0000000000573000-memory.dmp

Filesize
588KB

Download
memory/2648-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2648-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2648-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2648-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2648-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3520-25-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3520-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3520-26-0x0000000000400000-0x0000000000537000-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