ryuk | d7b324dfead641207c85cb18cdfc00bbfd37932f27f41c3af441d6912f235849

Analysis

max time kernel
199s
max time network
212s
platform
windows10-2004_x64
resource
win10v2004-en-20220113
submitted
20-02-2022 01:56

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General

Target

d7b324dfead641207c85cb18cdfc00bbfd37932f27f41c3af441d6912f235849.exe
Size

193KB
MD5

12147c94f3211733f893d31d587d4ad6
SHA1

708199a9a86894f464ec5a5d607ffb1093c096f4
SHA256

d7b324dfead641207c85cb18cdfc00bbfd37932f27f41c3af441d6912f235849
SHA512

3ef68160f44d16e3a305899d537773fdaace5ae6534eb185f3741bc2917f84457674a8bd1ad7db0c4b707a308f101cb3d49f7906bde7732dd26ed08cf9f6b1af

Score

10^/10

ryuk ransomware

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\RyukReadMe.html

Family

ryuk

Ransom Note

<html><body><p style="font-weight:bold;font-size:125%;top:0;left:0;"> [email protected] <br> </p><p style="position:absolute;bottom:0;right:1%;font-weight:bold;font-size:170%">balance of shadow universe</p><div style="font-size: 550%;font-weight:bold;width:50%;height:50%;overflow:auto;margin:auto;position:absolute;top:35%;left:40%;">Ryuk</div></body></html��

Emails

[email protected]

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\RyukReadMe.html

Family

ryuk

Ransom Note

[email protected] balance of shadow universe Ryuk

Emails

[email protected]

Signatures

Ryuk
Ransomware distributed via existing botnets, often Trickbot or Emotet.
ransomware ryuk

Executes dropped EXE 1 IoCs

pid	Process
3108	ZZKMIQJ.exe

Checks computer location settings 2 TTPs 2 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-1-5-21-1346565761-3498240568-4147300184-1000\Control Panel\International\Geo\Nation	ZZKMIQJ.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Control Panel\International\Geo\Nation	d7b324dfead641207c85cb18cdfc00bbfd37932f27f41c3af441d6912f235849.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Runs net.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
1292	d7b324dfead641207c85cb18cdfc00bbfd37932f27f41c3af441d6912f235849.exe
1292	d7b324dfead641207c85cb18cdfc00bbfd37932f27f41c3af441d6912f235849.exe
1292	d7b324dfead641207c85cb18cdfc00bbfd37932f27f41c3af441d6912f235849.exe
1292	d7b324dfead641207c85cb18cdfc00bbfd37932f27f41c3af441d6912f235849.exe
3108	ZZKMIQJ.exe
3108	ZZKMIQJ.exe
1292	d7b324dfead641207c85cb18cdfc00bbfd37932f27f41c3af441d6912f235849.exe
1292	d7b324dfead641207c85cb18cdfc00bbfd37932f27f41c3af441d6912f235849.exe
1292	d7b324dfead641207c85cb18cdfc00bbfd37932f27f41c3af441d6912f235849.exe
1292	d7b324dfead641207c85cb18cdfc00bbfd37932f27f41c3af441d6912f235849.exe
3108	ZZKMIQJ.exe
3108	ZZKMIQJ.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeBackupPrivilege	1292	d7b324dfead641207c85cb18cdfc00bbfd37932f27f41c3af441d6912f235849.exe
Token: SeBackupPrivilege	3108	ZZKMIQJ.exe

Suspicious use of WriteProcessMemory 51 IoCs

description	pid	Process	procid_target
PID 1292 wrote to memory of 3108	1292	d7b324dfead641207c85cb18cdfc00bbfd37932f27f41c3af441d6912f235849.exe	85
PID 1292 wrote to memory of 3108	1292	d7b324dfead641207c85cb18cdfc00bbfd37932f27f41c3af441d6912f235849.exe	85
PID 1292 wrote to memory of 3108	1292	d7b324dfead641207c85cb18cdfc00bbfd37932f27f41c3af441d6912f235849.exe	85
PID 1292 wrote to memory of 4380	1292	d7b324dfead641207c85cb18cdfc00bbfd37932f27f41c3af441d6912f235849.exe	86
PID 1292 wrote to memory of 4380	1292	d7b324dfead641207c85cb18cdfc00bbfd37932f27f41c3af441d6912f235849.exe	86
PID 1292 wrote to memory of 4380	1292	d7b324dfead641207c85cb18cdfc00bbfd37932f27f41c3af441d6912f235849.exe	86
PID 1292 wrote to memory of 3368	1292	d7b324dfead641207c85cb18cdfc00bbfd37932f27f41c3af441d6912f235849.exe	88
PID 1292 wrote to memory of 3368	1292	d7b324dfead641207c85cb18cdfc00bbfd37932f27f41c3af441d6912f235849.exe	88
PID 1292 wrote to memory of 3368	1292	d7b324dfead641207c85cb18cdfc00bbfd37932f27f41c3af441d6912f235849.exe	88
PID 4380 wrote to memory of 1392	4380	net.exe	90
PID 4380 wrote to memory of 1392	4380	net.exe	90
PID 4380 wrote to memory of 1392	4380	net.exe	90
PID 3368 wrote to memory of 816	3368	net.exe	91
PID 3368 wrote to memory of 816	3368	net.exe	91
PID 3368 wrote to memory of 816	3368	net.exe	91
PID 1292 wrote to memory of 4832	1292	d7b324dfead641207c85cb18cdfc00bbfd37932f27f41c3af441d6912f235849.exe	92
PID 1292 wrote to memory of 4832	1292	d7b324dfead641207c85cb18cdfc00bbfd37932f27f41c3af441d6912f235849.exe	92
PID 1292 wrote to memory of 4832	1292	d7b324dfead641207c85cb18cdfc00bbfd37932f27f41c3af441d6912f235849.exe	92
PID 4832 wrote to memory of 2948	4832	net.exe	94
PID 4832 wrote to memory of 2948	4832	net.exe	94
PID 4832 wrote to memory of 2948	4832	net.exe	94
PID 1292 wrote to memory of 4824	1292	d7b324dfead641207c85cb18cdfc00bbfd37932f27f41c3af441d6912f235849.exe	95
PID 1292 wrote to memory of 4824	1292	d7b324dfead641207c85cb18cdfc00bbfd37932f27f41c3af441d6912f235849.exe	95
PID 1292 wrote to memory of 4824	1292	d7b324dfead641207c85cb18cdfc00bbfd37932f27f41c3af441d6912f235849.exe	95
PID 4824 wrote to memory of 3896	4824	net.exe	97
PID 4824 wrote to memory of 3896	4824	net.exe	97
PID 4824 wrote to memory of 3896	4824	net.exe	97
PID 3108 wrote to memory of 3536	3108	ZZKMIQJ.exe	98
PID 3108 wrote to memory of 3536	3108	ZZKMIQJ.exe	98
PID 3108 wrote to memory of 3536	3108	ZZKMIQJ.exe	98
PID 3108 wrote to memory of 2132	3108	ZZKMIQJ.exe	100
PID 3108 wrote to memory of 2132	3108	ZZKMIQJ.exe	100
PID 3108 wrote to memory of 2132	3108	ZZKMIQJ.exe	100
PID 3536 wrote to memory of 4644	3536	net.exe	102
PID 3536 wrote to memory of 4644	3536	net.exe	102
PID 3536 wrote to memory of 4644	3536	net.exe	102
PID 2132 wrote to memory of 4728	2132	net.exe	103
PID 2132 wrote to memory of 4728	2132	net.exe	103
PID 2132 wrote to memory of 4728	2132	net.exe	103
PID 1292 wrote to memory of 12172	1292	d7b324dfead641207c85cb18cdfc00bbfd37932f27f41c3af441d6912f235849.exe	108
PID 1292 wrote to memory of 12172	1292	d7b324dfead641207c85cb18cdfc00bbfd37932f27f41c3af441d6912f235849.exe	108
PID 1292 wrote to memory of 12172	1292	d7b324dfead641207c85cb18cdfc00bbfd37932f27f41c3af441d6912f235849.exe	108
PID 1292 wrote to memory of 12180	1292	d7b324dfead641207c85cb18cdfc00bbfd37932f27f41c3af441d6912f235849.exe	105
PID 1292 wrote to memory of 12180	1292	d7b324dfead641207c85cb18cdfc00bbfd37932f27f41c3af441d6912f235849.exe	105
PID 1292 wrote to memory of 12180	1292	d7b324dfead641207c85cb18cdfc00bbfd37932f27f41c3af441d6912f235849.exe	105
PID 12172 wrote to memory of 12268	12172	net.exe	110
PID 12172 wrote to memory of 12268	12172	net.exe	110
PID 12180 wrote to memory of 12272	12180	net.exe	109
PID 12172 wrote to memory of 12268	12172	net.exe	110
PID 12180 wrote to memory of 12272	12180	net.exe	109
PID 12180 wrote to memory of 12272	12180	net.exe	109

C:\Users\Admin\AppData\Local\Temp\d7b324dfead641207c85cb18cdfc00bbfd37932f27f41c3af441d6912f235849.exe
"C:\Users\Admin\AppData\Local\Temp\d7b324dfead641207c85cb18cdfc00bbfd37932f27f41c3af441d6912f235849.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1292
- C:\Users\Admin\AppData\Local\Temp\ZZKMIQJ.exe
  "C:\Users\Admin\AppData\Local\Temp\ZZKMIQJ.exe" 8 LAN
  2⤵
  - Executes dropped EXE
  - Checks computer location settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3108
- - C:\Windows\SysWOW64\net.exe
    "C:\Windows\System32\net.exe" stop "audioendpointbuilder" /y
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3536
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 stop "audioendpointbuilder" /y
      4⤵
      PID:4644
- - C:\Windows\SysWOW64\net.exe
    "C:\Windows\System32\net.exe" stop "samss" /y
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2132
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 stop "samss" /y
      4⤵
      PID:4728
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "audioendpointbuilder" /y
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4380
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "audioendpointbuilder" /y
    3⤵
    PID:1392
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "samss" /y
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3368
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "samss" /y
    3⤵
    PID:816
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "audioendpointbuilder" /y
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4832
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "audioendpointbuilder" /y
    3⤵
    PID:2948
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "samss" /y
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4824
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "samss" /y
    3⤵
    PID:3896
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "samss" /y
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:12180
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "samss" /y
    3⤵
    PID:12272
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "samss" /y
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:12172
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "samss" /y
    3⤵
    PID:12268

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 3108 -ip 3108
1⤵
PID:11376

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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