ryuk | 8366f63d37f8cefda19657c49000b662c4dde38463517c34168b33bf427db5d2

Analysis

max time kernel
177s
max time network
204s
platform
windows10-2004_x64
resource
win10v2004-en-20220113
submitted
20-02-2022 05:08

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

8366f63d37f8cefda19657c49000b662c4dde38463517c34168b33bf427db5d2.exe
Size

187KB
MD5

2ee9a7ce3356c032d49c1947761c63b2
SHA1

30181311c46b89cc3e01d3d8207c4c533199fa88
SHA256

8366f63d37f8cefda19657c49000b662c4dde38463517c34168b33bf427db5d2
SHA512

d2e8c140e5935ab0761283c8f85a0f9881129a0f131e51d1d4e1257d47874be9326437bac33c1f921eff3f0658b0147f026492083e47d8bea6b50ddc9873afd2

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

Suspicious use of NtCreateProcessExOtherParentProcess 2 IoCs

description	pid	Process	procid_target
PID 10412 created 1300	10412	WerFault.exe	86
PID 10420 created 1300	10420	WerFault.exe	86

Executes dropped EXE 1 IoCs

pid	Process
1300	LIwIAuS.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	LIwIAuS.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Control Panel\International\Geo\Nation	8366f63d37f8cefda19657c49000b662c4dde38463517c34168b33bf427db5d2.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 14 IoCs

pid	Process
4692	8366f63d37f8cefda19657c49000b662c4dde38463517c34168b33bf427db5d2.exe
4692	8366f63d37f8cefda19657c49000b662c4dde38463517c34168b33bf427db5d2.exe
4692	8366f63d37f8cefda19657c49000b662c4dde38463517c34168b33bf427db5d2.exe
4692	8366f63d37f8cefda19657c49000b662c4dde38463517c34168b33bf427db5d2.exe
1300	LIwIAuS.exe
1300	LIwIAuS.exe
4692	8366f63d37f8cefda19657c49000b662c4dde38463517c34168b33bf427db5d2.exe
4692	8366f63d37f8cefda19657c49000b662c4dde38463517c34168b33bf427db5d2.exe
4692	8366f63d37f8cefda19657c49000b662c4dde38463517c34168b33bf427db5d2.exe
4692	8366f63d37f8cefda19657c49000b662c4dde38463517c34168b33bf427db5d2.exe
4692	8366f63d37f8cefda19657c49000b662c4dde38463517c34168b33bf427db5d2.exe
4692	8366f63d37f8cefda19657c49000b662c4dde38463517c34168b33bf427db5d2.exe
4692	8366f63d37f8cefda19657c49000b662c4dde38463517c34168b33bf427db5d2.exe
4692	8366f63d37f8cefda19657c49000b662c4dde38463517c34168b33bf427db5d2.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeBackupPrivilege	4692	8366f63d37f8cefda19657c49000b662c4dde38463517c34168b33bf427db5d2.exe
Token: SeBackupPrivilege	1300	LIwIAuS.exe

Suspicious use of WriteProcessMemory 63 IoCs

description	pid	Process	procid_target
PID 4692 wrote to memory of 1300	4692	8366f63d37f8cefda19657c49000b662c4dde38463517c34168b33bf427db5d2.exe	86
PID 4692 wrote to memory of 1300	4692	8366f63d37f8cefda19657c49000b662c4dde38463517c34168b33bf427db5d2.exe	86
PID 4692 wrote to memory of 1300	4692	8366f63d37f8cefda19657c49000b662c4dde38463517c34168b33bf427db5d2.exe	86
PID 4692 wrote to memory of 1244	4692	8366f63d37f8cefda19657c49000b662c4dde38463517c34168b33bf427db5d2.exe	87
PID 4692 wrote to memory of 1244	4692	8366f63d37f8cefda19657c49000b662c4dde38463517c34168b33bf427db5d2.exe	87
PID 4692 wrote to memory of 1244	4692	8366f63d37f8cefda19657c49000b662c4dde38463517c34168b33bf427db5d2.exe	87
PID 1244 wrote to memory of 4416	1244	net.exe	89
PID 1244 wrote to memory of 4416	1244	net.exe	89
PID 1244 wrote to memory of 4416	1244	net.exe	89
PID 4692 wrote to memory of 3528	4692	8366f63d37f8cefda19657c49000b662c4dde38463517c34168b33bf427db5d2.exe	90
PID 4692 wrote to memory of 3528	4692	8366f63d37f8cefda19657c49000b662c4dde38463517c34168b33bf427db5d2.exe	90
PID 4692 wrote to memory of 3528	4692	8366f63d37f8cefda19657c49000b662c4dde38463517c34168b33bf427db5d2.exe	90
PID 3528 wrote to memory of 632	3528	net.exe	92
PID 3528 wrote to memory of 632	3528	net.exe	92
PID 3528 wrote to memory of 632	3528	net.exe	92
PID 4692 wrote to memory of 2664	4692	8366f63d37f8cefda19657c49000b662c4dde38463517c34168b33bf427db5d2.exe	93
PID 4692 wrote to memory of 2664	4692	8366f63d37f8cefda19657c49000b662c4dde38463517c34168b33bf427db5d2.exe	93
PID 4692 wrote to memory of 2664	4692	8366f63d37f8cefda19657c49000b662c4dde38463517c34168b33bf427db5d2.exe	93
PID 2664 wrote to memory of 4644	2664	net.exe	95
PID 2664 wrote to memory of 4644	2664	net.exe	95
PID 2664 wrote to memory of 4644	2664	net.exe	95
PID 4692 wrote to memory of 1932	4692	8366f63d37f8cefda19657c49000b662c4dde38463517c34168b33bf427db5d2.exe	96
PID 4692 wrote to memory of 1932	4692	8366f63d37f8cefda19657c49000b662c4dde38463517c34168b33bf427db5d2.exe	96
PID 4692 wrote to memory of 1932	4692	8366f63d37f8cefda19657c49000b662c4dde38463517c34168b33bf427db5d2.exe	96
PID 1932 wrote to memory of 3596	1932	net.exe	98
PID 1932 wrote to memory of 3596	1932	net.exe	98
PID 1932 wrote to memory of 3596	1932	net.exe	98
PID 1300 wrote to memory of 1168	1300	LIwIAuS.exe	99
PID 1300 wrote to memory of 1168	1300	LIwIAuS.exe	99
PID 1300 wrote to memory of 1168	1300	LIwIAuS.exe	99
PID 1168 wrote to memory of 4756	1168	net.exe	101
PID 1168 wrote to memory of 4756	1168	net.exe	101
PID 1168 wrote to memory of 4756	1168	net.exe	101
PID 1300 wrote to memory of 5036	1300	LIwIAuS.exe	102
PID 1300 wrote to memory of 5036	1300	LIwIAuS.exe	102
PID 1300 wrote to memory of 5036	1300	LIwIAuS.exe	102
PID 4692 wrote to memory of 3312	4692	8366f63d37f8cefda19657c49000b662c4dde38463517c34168b33bf427db5d2.exe	103
PID 4692 wrote to memory of 3312	4692	8366f63d37f8cefda19657c49000b662c4dde38463517c34168b33bf427db5d2.exe	103
PID 4692 wrote to memory of 3312	4692	8366f63d37f8cefda19657c49000b662c4dde38463517c34168b33bf427db5d2.exe	103
PID 4692 wrote to memory of 504	4692	8366f63d37f8cefda19657c49000b662c4dde38463517c34168b33bf427db5d2.exe	104
PID 4692 wrote to memory of 504	4692	8366f63d37f8cefda19657c49000b662c4dde38463517c34168b33bf427db5d2.exe	104
PID 4692 wrote to memory of 504	4692	8366f63d37f8cefda19657c49000b662c4dde38463517c34168b33bf427db5d2.exe	104
PID 4692 wrote to memory of 10152	4692	8366f63d37f8cefda19657c49000b662c4dde38463517c34168b33bf427db5d2.exe	105
PID 4692 wrote to memory of 10152	4692	8366f63d37f8cefda19657c49000b662c4dde38463517c34168b33bf427db5d2.exe	105
PID 4692 wrote to memory of 10152	4692	8366f63d37f8cefda19657c49000b662c4dde38463517c34168b33bf427db5d2.exe	105
PID 4692 wrote to memory of 9792	4692	8366f63d37f8cefda19657c49000b662c4dde38463517c34168b33bf427db5d2.exe	106
PID 4692 wrote to memory of 9792	4692	8366f63d37f8cefda19657c49000b662c4dde38463517c34168b33bf427db5d2.exe	106
PID 4692 wrote to memory of 9792	4692	8366f63d37f8cefda19657c49000b662c4dde38463517c34168b33bf427db5d2.exe	106
PID 5036 wrote to memory of 9988	5036	net.exe	113
PID 5036 wrote to memory of 9988	5036	net.exe	113
PID 5036 wrote to memory of 9988	5036	net.exe	113
PID 504 wrote to memory of 10020	504	net.exe	114
PID 504 wrote to memory of 10020	504	net.exe	114
PID 504 wrote to memory of 10020	504	net.exe	114
PID 10152 wrote to memory of 10024	10152	net.exe	117
PID 10152 wrote to memory of 10024	10152	net.exe	117
PID 10152 wrote to memory of 10024	10152	net.exe	117
PID 9792 wrote to memory of 3120	9792	net.exe	115
PID 9792 wrote to memory of 3120	9792	net.exe	115
PID 9792 wrote to memory of 3120	9792	net.exe	115
PID 3312 wrote to memory of 10036	3312	net.exe	116
PID 3312 wrote to memory of 10036	3312	net.exe	116
PID 3312 wrote to memory of 10036	3312	net.exe	116

C:\Users\Admin\AppData\Local\Temp\8366f63d37f8cefda19657c49000b662c4dde38463517c34168b33bf427db5d2.exe
"C:\Users\Admin\AppData\Local\Temp\8366f63d37f8cefda19657c49000b662c4dde38463517c34168b33bf427db5d2.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4692
- C:\Users\Admin\AppData\Local\Temp\LIwIAuS.exe
  "C:\Users\Admin\AppData\Local\Temp\LIwIAuS.exe" 8 LAN
  2⤵
  - Executes dropped EXE
  - Checks computer location settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1300
- - C:\Windows\SysWOW64\net.exe
    "C:\Windows\System32\net.exe" stop "audioendpointbuilder" /y
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1168
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 stop "audioendpointbuilder" /y
      4⤵
      PID:4756
- - C:\Windows\SysWOW64\net.exe
    "C:\Windows\System32\net.exe" stop "samss" /y
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:5036
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 stop "samss" /y
      4⤵
      PID:9988
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "audioendpointbuilder" /y
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1244
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "audioendpointbuilder" /y
    3⤵
    PID:4416
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "samss" /y
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3528
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "samss" /y
    3⤵
    PID:632
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "audioendpointbuilder" /y
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2664
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "audioendpointbuilder" /y
    3⤵
    PID:4644
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "samss" /y
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1932
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "samss" /y
    3⤵
    PID:3596
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "audioendpointbuilder" /y
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3312
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "audioendpointbuilder" /y
    3⤵
    PID:10036
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "samss" /y
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:504
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "samss" /y
    3⤵
    PID:10020
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "audioendpointbuilder" /y
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:10152
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "audioendpointbuilder" /y
    3⤵
    PID:10024
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "samss" /y
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:9792
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "samss" /y
    3⤵
    PID:3120

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 500 -p 1300 -ip 1300
1⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
PID:10420

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 1300 -ip 1300
1⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
PID:10412

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

Replay Monitor

Loading Replay Monitor...

Downloads