djvu | 30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c

General

Target

JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe
Size

823KB
MD5

b1dc0821d7a3beb1ab6275b0fddf2ea7
SHA1

f2e20326079083b3148a45fefee85128f6df1472
SHA256

30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c
SHA512

39d26d805e77dba631e5fbd62c346c3e401f3826d2c89c65c4503f8be6fe8148414244d558a69823af8ca8e6ce357043abd0592dd7a29b8da9ed02cac0fc9e7f
SSDEEP

12288:LG6IxduDAtyEwzC+Ij0JNWR12A0qqcR8a/Xj/dqwpCve5exgyI25To11PfCBo:LG6I1kzcoJNWjn5D5q7e5JC5ToPPKB

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.nuhb
offline_id
PfLhykvDxmCghCq8peuxBtQ3c0QBuANi8WUkuet1
payload_url
http://zerit.top/dl/build2.exe

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

Signatures

Detected Djvu ransomware 9 IoCs

resource	yara_rule
behavioral2/memory/824-2-0x0000000002230000-0x000000000234B000-memory.dmp	family_djvu
behavioral2/memory/2992-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2992-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2992-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2992-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2992-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1392-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1392-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1392-26-0x0000000000400000-0x0000000000537000-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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
800	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-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\bca3f397-fe72-4f22-9530-047f67135869\\JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe\" --AutoStart"	JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.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
15	api.2ip.ua
14	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 824 set thread context of 2992	824	JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe	83
PID 2796 set thread context of 1392	2796	JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe	89

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
4576	1392	WerFault.exe	89

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_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2992	JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe
2992	JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 824 wrote to memory of 2992	824	JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe	83
PID 824 wrote to memory of 2992	824	JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe	83
PID 824 wrote to memory of 2992	824	JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe	83
PID 824 wrote to memory of 2992	824	JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe	83
PID 824 wrote to memory of 2992	824	JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe	83
PID 824 wrote to memory of 2992	824	JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe	83
PID 824 wrote to memory of 2992	824	JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe	83
PID 824 wrote to memory of 2992	824	JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe	83
PID 824 wrote to memory of 2992	824	JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe	83
PID 824 wrote to memory of 2992	824	JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe	83
PID 2992 wrote to memory of 800	2992	JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe	85
PID 2992 wrote to memory of 800	2992	JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe	85
PID 2992 wrote to memory of 800	2992	JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe	85
PID 2992 wrote to memory of 2796	2992	JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe	86
PID 2992 wrote to memory of 2796	2992	JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe	86
PID 2992 wrote to memory of 2796	2992	JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe	86
PID 2796 wrote to memory of 1392	2796	JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe	89
PID 2796 wrote to memory of 1392	2796	JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe	89
PID 2796 wrote to memory of 1392	2796	JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe	89
PID 2796 wrote to memory of 1392	2796	JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe	89
PID 2796 wrote to memory of 1392	2796	JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe	89
PID 2796 wrote to memory of 1392	2796	JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe	89
PID 2796 wrote to memory of 1392	2796	JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe	89
PID 2796 wrote to memory of 1392	2796	JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe	89
PID 2796 wrote to memory of 1392	2796	JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe	89
PID 2796 wrote to memory of 1392	2796	JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe	89

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:824
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.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:2992
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\bca3f397-fe72-4f22-9530-047f67135869" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:800
- - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2796
  - - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      PID:1392
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 1392 -s 568
        5⤵
        Program crash
        
        PID:4576

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1392 -ip 1392
1⤵
PID:4672

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\bca3f397-fe72-4f22-9530-047f67135869\JaffaCakes118_30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c.exe

Filesize
823KB

MD5
b1dc0821d7a3beb1ab6275b0fddf2ea7

SHA1
f2e20326079083b3148a45fefee85128f6df1472

SHA256
30a3db8a5b8a6dd193bc6e14f130c297cc82cf3fcc100a269f991ccb307a6b3c

SHA512
39d26d805e77dba631e5fbd62c346c3e401f3826d2c89c65c4503f8be6fe8148414244d558a69823af8ca8e6ce357043abd0592dd7a29b8da9ed02cac0fc9e7f

Download Submit
memory/824-2-0x0000000002230000-0x000000000234B000-memory.dmp

Filesize
1.1MB

Download
memory/824-1-0x0000000002190000-0x000000000222E000-memory.dmp

Filesize
632KB

Download
memory/1392-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1392-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1392-26-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2796-21-0x0000000000400000-0x00000000004D9000-memory.dmp

Filesize
868KB

Download
memory/2796-27-0x0000000000400000-0x00000000004D9000-memory.dmp

Filesize
868KB

Download
memory/2992-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2992-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2992-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2992-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2992-3-0x0000000000400000-0x0000000000537000-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