ryuk | f63501542310745baa8fa2026930590cd690b53bfddb940378eca685a2c5e682

Analysis

max time kernel
170s
max time network
87s
platform
windows7_x64
resource
win7-en-20211208
submitted
20/02/2022, 00:16

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General

Target

f63501542310745baa8fa2026930590cd690b53bfddb940378eca685a2c5e682.exe
Size

188KB
MD5

81a657edce1fc7c97e2e3367e676339f
SHA1

13a1686aaaba2c46792b468ca78f6f20a3817468
SHA256

f63501542310745baa8fa2026930590cd690b53bfddb940378eca685a2c5e682
SHA512

2233a938fa19a39d9052a2e339b18b140d9e258a9d3394219e60c636095566647faacba4ee72d007ade4c768cdece84b373f029bb19e53b3279e99f1204ee07e

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
592	AgjGlRj.exe

Loads dropped DLL 2 IoCs

pid	Process
1220	f63501542310745baa8fa2026930590cd690b53bfddb940378eca685a2c5e682.exe
1220	f63501542310745baa8fa2026930590cd690b53bfddb940378eca685a2c5e682.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 9 IoCs

pid	Process
1220	f63501542310745baa8fa2026930590cd690b53bfddb940378eca685a2c5e682.exe
1220	f63501542310745baa8fa2026930590cd690b53bfddb940378eca685a2c5e682.exe
592	AgjGlRj.exe
1220	f63501542310745baa8fa2026930590cd690b53bfddb940378eca685a2c5e682.exe
1220	f63501542310745baa8fa2026930590cd690b53bfddb940378eca685a2c5e682.exe
592	AgjGlRj.exe
1220	f63501542310745baa8fa2026930590cd690b53bfddb940378eca685a2c5e682.exe
1220	f63501542310745baa8fa2026930590cd690b53bfddb940378eca685a2c5e682.exe
592	AgjGlRj.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeBackupPrivilege	1220	f63501542310745baa8fa2026930590cd690b53bfddb940378eca685a2c5e682.exe
Token: SeBackupPrivilege	592	AgjGlRj.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 1220 wrote to memory of 592	1220	f63501542310745baa8fa2026930590cd690b53bfddb940378eca685a2c5e682.exe	27
PID 1220 wrote to memory of 592	1220	f63501542310745baa8fa2026930590cd690b53bfddb940378eca685a2c5e682.exe	27
PID 1220 wrote to memory of 592	1220	f63501542310745baa8fa2026930590cd690b53bfddb940378eca685a2c5e682.exe	27
PID 1220 wrote to memory of 592	1220	f63501542310745baa8fa2026930590cd690b53bfddb940378eca685a2c5e682.exe	27
PID 1220 wrote to memory of 988	1220	f63501542310745baa8fa2026930590cd690b53bfddb940378eca685a2c5e682.exe	28
PID 1220 wrote to memory of 988	1220	f63501542310745baa8fa2026930590cd690b53bfddb940378eca685a2c5e682.exe	28
PID 1220 wrote to memory of 988	1220	f63501542310745baa8fa2026930590cd690b53bfddb940378eca685a2c5e682.exe	28
PID 1220 wrote to memory of 988	1220	f63501542310745baa8fa2026930590cd690b53bfddb940378eca685a2c5e682.exe	28
PID 1220 wrote to memory of 1328	1220	f63501542310745baa8fa2026930590cd690b53bfddb940378eca685a2c5e682.exe	30
PID 1220 wrote to memory of 1328	1220	f63501542310745baa8fa2026930590cd690b53bfddb940378eca685a2c5e682.exe	30
PID 1220 wrote to memory of 1328	1220	f63501542310745baa8fa2026930590cd690b53bfddb940378eca685a2c5e682.exe	30
PID 1220 wrote to memory of 1328	1220	f63501542310745baa8fa2026930590cd690b53bfddb940378eca685a2c5e682.exe	30
PID 1220 wrote to memory of 1472	1220	f63501542310745baa8fa2026930590cd690b53bfddb940378eca685a2c5e682.exe	32
PID 1220 wrote to memory of 1472	1220	f63501542310745baa8fa2026930590cd690b53bfddb940378eca685a2c5e682.exe	32
PID 1220 wrote to memory of 1472	1220	f63501542310745baa8fa2026930590cd690b53bfddb940378eca685a2c5e682.exe	32
PID 1220 wrote to memory of 1472	1220	f63501542310745baa8fa2026930590cd690b53bfddb940378eca685a2c5e682.exe	32
PID 1328 wrote to memory of 876	1328	net.exe	35
PID 1328 wrote to memory of 876	1328	net.exe	35
PID 1328 wrote to memory of 876	1328	net.exe	35
PID 1328 wrote to memory of 876	1328	net.exe	35
PID 988 wrote to memory of 1940	988	net.exe	36
PID 988 wrote to memory of 1940	988	net.exe	36
PID 988 wrote to memory of 1940	988	net.exe	36
PID 988 wrote to memory of 1940	988	net.exe	36
PID 1472 wrote to memory of 1780	1472	net.exe	34
PID 1472 wrote to memory of 1780	1472	net.exe	34
PID 1472 wrote to memory of 1780	1472	net.exe	34
PID 1472 wrote to memory of 1780	1472	net.exe	34
PID 1220 wrote to memory of 956	1220	f63501542310745baa8fa2026930590cd690b53bfddb940378eca685a2c5e682.exe	37
PID 1220 wrote to memory of 956	1220	f63501542310745baa8fa2026930590cd690b53bfddb940378eca685a2c5e682.exe	37
PID 1220 wrote to memory of 956	1220	f63501542310745baa8fa2026930590cd690b53bfddb940378eca685a2c5e682.exe	37
PID 1220 wrote to memory of 956	1220	f63501542310745baa8fa2026930590cd690b53bfddb940378eca685a2c5e682.exe	37
PID 956 wrote to memory of 1552	956	net.exe	39
PID 956 wrote to memory of 1552	956	net.exe	39
PID 956 wrote to memory of 1552	956	net.exe	39
PID 956 wrote to memory of 1552	956	net.exe	39
PID 592 wrote to memory of 2168	592	AgjGlRj.exe	40
PID 592 wrote to memory of 2168	592	AgjGlRj.exe	40
PID 592 wrote to memory of 2168	592	AgjGlRj.exe	40
PID 592 wrote to memory of 2168	592	AgjGlRj.exe	40
PID 2168 wrote to memory of 2192	2168	net.exe	42
PID 2168 wrote to memory of 2192	2168	net.exe	42
PID 2168 wrote to memory of 2192	2168	net.exe	42
PID 2168 wrote to memory of 2192	2168	net.exe	42
PID 1220 wrote to memory of 8640	1220	f63501542310745baa8fa2026930590cd690b53bfddb940378eca685a2c5e682.exe	45
PID 1220 wrote to memory of 8640	1220	f63501542310745baa8fa2026930590cd690b53bfddb940378eca685a2c5e682.exe	45
PID 1220 wrote to memory of 8640	1220	f63501542310745baa8fa2026930590cd690b53bfddb940378eca685a2c5e682.exe	45
PID 1220 wrote to memory of 8640	1220	f63501542310745baa8fa2026930590cd690b53bfddb940378eca685a2c5e682.exe	45
PID 8640 wrote to memory of 8664	8640	net.exe	47
PID 8640 wrote to memory of 8664	8640	net.exe	47
PID 8640 wrote to memory of 8664	8640	net.exe	47
PID 8640 wrote to memory of 8664	8640	net.exe	47
PID 1220 wrote to memory of 8676	1220	f63501542310745baa8fa2026930590cd690b53bfddb940378eca685a2c5e682.exe	48
PID 1220 wrote to memory of 8676	1220	f63501542310745baa8fa2026930590cd690b53bfddb940378eca685a2c5e682.exe	48
PID 1220 wrote to memory of 8676	1220	f63501542310745baa8fa2026930590cd690b53bfddb940378eca685a2c5e682.exe	48
PID 1220 wrote to memory of 8676	1220	f63501542310745baa8fa2026930590cd690b53bfddb940378eca685a2c5e682.exe	48
PID 8676 wrote to memory of 8700	8676	net.exe	50
PID 8676 wrote to memory of 8700	8676	net.exe	50
PID 8676 wrote to memory of 8700	8676	net.exe	50
PID 8676 wrote to memory of 8700	8676	net.exe	50
PID 592 wrote to memory of 8716	592	AgjGlRj.exe	51
PID 592 wrote to memory of 8716	592	AgjGlRj.exe	51
PID 592 wrote to memory of 8716	592	AgjGlRj.exe	51
PID 592 wrote to memory of 8716	592	AgjGlRj.exe	51

C:\Users\Admin\AppData\Local\Temp\f63501542310745baa8fa2026930590cd690b53bfddb940378eca685a2c5e682.exe
"C:\Users\Admin\AppData\Local\Temp\f63501542310745baa8fa2026930590cd690b53bfddb940378eca685a2c5e682.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1220
- C:\Users\Admin\AppData\Local\Temp\AgjGlRj.exe
  "C:\Users\Admin\AppData\Local\Temp\AgjGlRj.exe" 8 LAN
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:592
- - C:\Windows\SysWOW64\net.exe
    "C:\Windows\System32\net.exe" stop "samss" /y
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2168
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 stop "samss" /y
      4⤵
      PID:2192
- - C:\Windows\SysWOW64\net.exe
    "C:\Windows\System32\net.exe" stop "samss" /y
    3⤵
    PID:8716
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 stop "samss" /y
      4⤵
      PID:8740
- - C:\Windows\SysWOW64\net.exe
    "C:\Windows\System32\net.exe" stop "samss" /y
    3⤵
    PID:36480
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 stop "samss" /y
      4⤵
      PID:36504
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "audioendpointbuilder" /y
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:988
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "audioendpointbuilder" /y
    3⤵
    PID:1940
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "samss" /y
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1328
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "samss" /y
    3⤵
    PID:876
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "audioendpointbuilder" /y
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1472
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "audioendpointbuilder" /y
    3⤵
    PID:1780
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "samss" /y
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:956
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "samss" /y
    3⤵
    PID:1552
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "samss" /y
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:8640
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "samss" /y
    3⤵
    PID:8664
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "samss" /y
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:8676
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "samss" /y
    3⤵
    PID:8700
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "samss" /y
  2⤵
  PID:36400
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "samss" /y
    3⤵
    PID:36424
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "samss" /y
  2⤵
  PID:36440
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "samss" /y
    3⤵
    PID:36468

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1220-54-0x0000000076C61000-0x0000000076C63000-memory.dmp

Filesize
8KB

Download