djvu | 59d0891001fbd6107176eabf298e6247ebb7c9da90e2e31c342d3333e50679c9

General

Target

JaffaCakes118_1b91bf136ea911e84d372e78222f2a54.exe
Size

804KB
MD5

1b91bf136ea911e84d372e78222f2a54
SHA1

58813bc4c7e6a160c127b8f222042f88fb470126
SHA256

59d0891001fbd6107176eabf298e6247ebb7c9da90e2e31c342d3333e50679c9
SHA512

9774e559ceb5ae1e6ec46ec1cc7e40c18f42837d741bd7e761b1c88c880e50507393114f3094b35888055557de88bc5a42d55f32dc19b88fda02024dbd80729e
SSDEEP

24576:EfhYFVaIWyVCbJ5iuy0YK208q6RW4wgVxBfDo:eh4VxWyVCbc823q6RW5gVx

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://rlrz.org/lancer/get.php

Attributes

extension
.zaps
offline_id
xcdIdDNFh62dy3iJsba1COhcfDENsbjPHQQ2Eht1
payload_url
http://znpst.top/dl/build2.exe

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

Signatures

Detected Djvu ransomware 9 IoCs

resource	yara_rule
behavioral2/memory/2788-2-0x0000000000E10000-0x0000000000F2B000-memory.dmp	family_djvu
behavioral2/memory/1104-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1104-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1104-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1104-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1104-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/116-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/116-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/116-26-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu
Djvu family
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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	JaffaCakes118_1b91bf136ea911e84d372e78222f2a54.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
4232	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-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\a09bb31e-4fde-4413-8200-eda71c2c8556\\JaffaCakes118_1b91bf136ea911e84d372e78222f2a54.exe\" --AutoStart"	JaffaCakes118_1b91bf136ea911e84d372e78222f2a54.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
5	api.2ip.ua
6	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2788 set thread context of 1104	2788	JaffaCakes118_1b91bf136ea911e84d372e78222f2a54.exe	84
PID 4384 set thread context of 116	4384	JaffaCakes118_1b91bf136ea911e84d372e78222f2a54.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
4660	116	WerFault.exe	88

System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_1b91bf136ea911e84d372e78222f2a54.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_1b91bf136ea911e84d372e78222f2a54.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_1b91bf136ea911e84d372e78222f2a54.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_1b91bf136ea911e84d372e78222f2a54.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1104	JaffaCakes118_1b91bf136ea911e84d372e78222f2a54.exe
1104	JaffaCakes118_1b91bf136ea911e84d372e78222f2a54.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2788 wrote to memory of 1104	2788	JaffaCakes118_1b91bf136ea911e84d372e78222f2a54.exe	84
PID 2788 wrote to memory of 1104	2788	JaffaCakes118_1b91bf136ea911e84d372e78222f2a54.exe	84
PID 2788 wrote to memory of 1104	2788	JaffaCakes118_1b91bf136ea911e84d372e78222f2a54.exe	84
PID 2788 wrote to memory of 1104	2788	JaffaCakes118_1b91bf136ea911e84d372e78222f2a54.exe	84
PID 2788 wrote to memory of 1104	2788	JaffaCakes118_1b91bf136ea911e84d372e78222f2a54.exe	84
PID 2788 wrote to memory of 1104	2788	JaffaCakes118_1b91bf136ea911e84d372e78222f2a54.exe	84
PID 2788 wrote to memory of 1104	2788	JaffaCakes118_1b91bf136ea911e84d372e78222f2a54.exe	84
PID 2788 wrote to memory of 1104	2788	JaffaCakes118_1b91bf136ea911e84d372e78222f2a54.exe	84
PID 2788 wrote to memory of 1104	2788	JaffaCakes118_1b91bf136ea911e84d372e78222f2a54.exe	84
PID 2788 wrote to memory of 1104	2788	JaffaCakes118_1b91bf136ea911e84d372e78222f2a54.exe	84
PID 1104 wrote to memory of 4232	1104	JaffaCakes118_1b91bf136ea911e84d372e78222f2a54.exe	85
PID 1104 wrote to memory of 4232	1104	JaffaCakes118_1b91bf136ea911e84d372e78222f2a54.exe	85
PID 1104 wrote to memory of 4232	1104	JaffaCakes118_1b91bf136ea911e84d372e78222f2a54.exe	85
PID 1104 wrote to memory of 4384	1104	JaffaCakes118_1b91bf136ea911e84d372e78222f2a54.exe	86
PID 1104 wrote to memory of 4384	1104	JaffaCakes118_1b91bf136ea911e84d372e78222f2a54.exe	86
PID 1104 wrote to memory of 4384	1104	JaffaCakes118_1b91bf136ea911e84d372e78222f2a54.exe	86
PID 4384 wrote to memory of 116	4384	JaffaCakes118_1b91bf136ea911e84d372e78222f2a54.exe	88
PID 4384 wrote to memory of 116	4384	JaffaCakes118_1b91bf136ea911e84d372e78222f2a54.exe	88
PID 4384 wrote to memory of 116	4384	JaffaCakes118_1b91bf136ea911e84d372e78222f2a54.exe	88
PID 4384 wrote to memory of 116	4384	JaffaCakes118_1b91bf136ea911e84d372e78222f2a54.exe	88
PID 4384 wrote to memory of 116	4384	JaffaCakes118_1b91bf136ea911e84d372e78222f2a54.exe	88
PID 4384 wrote to memory of 116	4384	JaffaCakes118_1b91bf136ea911e84d372e78222f2a54.exe	88
PID 4384 wrote to memory of 116	4384	JaffaCakes118_1b91bf136ea911e84d372e78222f2a54.exe	88
PID 4384 wrote to memory of 116	4384	JaffaCakes118_1b91bf136ea911e84d372e78222f2a54.exe	88
PID 4384 wrote to memory of 116	4384	JaffaCakes118_1b91bf136ea911e84d372e78222f2a54.exe	88
PID 4384 wrote to memory of 116	4384	JaffaCakes118_1b91bf136ea911e84d372e78222f2a54.exe	88

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1b91bf136ea911e84d372e78222f2a54.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1b91bf136ea911e84d372e78222f2a54.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2788
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1b91bf136ea911e84d372e78222f2a54.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1b91bf136ea911e84d372e78222f2a54.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1104
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\a09bb31e-4fde-4413-8200-eda71c2c8556" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:4232
- - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1b91bf136ea911e84d372e78222f2a54.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1b91bf136ea911e84d372e78222f2a54.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4384
  - - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1b91bf136ea911e84d372e78222f2a54.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1b91bf136ea911e84d372e78222f2a54.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      PID:116
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 116 -s 584
        5⤵
        Program crash
        
        PID:4660

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 116 -ip 116
1⤵
PID:4988

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\a09bb31e-4fde-4413-8200-eda71c2c8556\JaffaCakes118_1b91bf136ea911e84d372e78222f2a54.exe

Filesize
804KB

MD5
1b91bf136ea911e84d372e78222f2a54

SHA1
58813bc4c7e6a160c127b8f222042f88fb470126

SHA256
59d0891001fbd6107176eabf298e6247ebb7c9da90e2e31c342d3333e50679c9

SHA512
9774e559ceb5ae1e6ec46ec1cc7e40c18f42837d741bd7e761b1c88c880e50507393114f3094b35888055557de88bc5a42d55f32dc19b88fda02024dbd80729e

Download Submit
memory/116-26-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/116-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/116-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1104-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1104-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1104-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1104-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1104-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2788-1-0x0000000000D70000-0x0000000000E0A000-memory.dmp

Filesize
616KB

Download
memory/2788-2-0x0000000000E10000-0x0000000000F2B000-memory.dmp

Filesize
1.1MB

Download
memory/4384-24-0x0000000000400000-0x00000000008F8000-memory.dmp

Filesize
5.0MB

Download
memory/4384-25-0x0000000000400000-0x00000000008F8000-memory.dmp

Filesize
5.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads