ryuk | 08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c

Analysis

max time kernel
171s
max time network
143s
platform
windows7_x64
resource
win7-en-20211208
submitted
19/02/2022, 08:33

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General

Target

08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe
Size

192KB
MD5

38df8a5c21f7df368490f8a0a0e276f9
SHA1

564641f0da5a9365a748a9589535f3b9439e5cc9
SHA256

08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c
SHA512

2d3aaabd9f2d1fc4438ff31717dd53667b16acfa421c0364374135ed41360a1dee78d8f51ae588017c895c192f031bf13cbbaa67b1d240ddd86025ebc06be2cf

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
648	FYqNGGm.exe

Loads dropped DLL 2 IoCs

pid	Process
1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe
1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.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 39 IoCs

pid	Process
1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe
1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe
648	FYqNGGm.exe
1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe
1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe
1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe
1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe
1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe
1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe
1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe
1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe
1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe
1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe
1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe
1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe
1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe
1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe
1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe
1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe
1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe
1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe
1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe
1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe
1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe
1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe
648	FYqNGGm.exe
648	FYqNGGm.exe
648	FYqNGGm.exe
648	FYqNGGm.exe
648	FYqNGGm.exe
648	FYqNGGm.exe
648	FYqNGGm.exe
648	FYqNGGm.exe
648	FYqNGGm.exe
648	FYqNGGm.exe
648	FYqNGGm.exe
1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe
1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe
648	FYqNGGm.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeBackupPrivilege	1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe
Token: SeBackupPrivilege	648	FYqNGGm.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 1624 wrote to memory of 648	1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe	27
PID 1624 wrote to memory of 648	1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe	27
PID 1624 wrote to memory of 648	1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe	27
PID 1624 wrote to memory of 648	1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe	27
PID 648 wrote to memory of 1580	648	FYqNGGm.exe	29
PID 648 wrote to memory of 1580	648	FYqNGGm.exe	29
PID 648 wrote to memory of 1580	648	FYqNGGm.exe	29
PID 648 wrote to memory of 1580	648	FYqNGGm.exe	29
PID 1624 wrote to memory of 1700	1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe	28
PID 1624 wrote to memory of 1700	1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe	28
PID 1624 wrote to memory of 1700	1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe	28
PID 1624 wrote to memory of 1700	1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe	28
PID 1624 wrote to memory of 1292	1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe	30
PID 1624 wrote to memory of 1292	1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe	30
PID 1624 wrote to memory of 1292	1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe	30
PID 1624 wrote to memory of 1292	1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe	30
PID 1624 wrote to memory of 2076	1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe	34
PID 1624 wrote to memory of 2076	1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe	34
PID 1624 wrote to memory of 2076	1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe	34
PID 1624 wrote to memory of 2076	1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe	34
PID 1624 wrote to memory of 2092	1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe	36
PID 1624 wrote to memory of 2092	1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe	36
PID 1624 wrote to memory of 2092	1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe	36
PID 1624 wrote to memory of 2092	1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe	36
PID 648 wrote to memory of 2100	648	FYqNGGm.exe	35
PID 648 wrote to memory of 2100	648	FYqNGGm.exe	35
PID 648 wrote to memory of 2100	648	FYqNGGm.exe	35
PID 648 wrote to memory of 2100	648	FYqNGGm.exe	35
PID 1580 wrote to memory of 2524	1580	net.exe	41
PID 1580 wrote to memory of 2524	1580	net.exe	41
PID 1580 wrote to memory of 2524	1580	net.exe	41
PID 1580 wrote to memory of 2524	1580	net.exe	41
PID 1700 wrote to memory of 2532	1700	net.exe	43
PID 2100 wrote to memory of 2540	2100	net.exe	42
PID 1700 wrote to memory of 2532	1700	net.exe	43
PID 1700 wrote to memory of 2532	1700	net.exe	43
PID 2100 wrote to memory of 2540	2100	net.exe	42
PID 1700 wrote to memory of 2532	1700	net.exe	43
PID 2100 wrote to memory of 2540	2100	net.exe	42
PID 2100 wrote to memory of 2540	2100	net.exe	42
PID 2092 wrote to memory of 2556	2092	net.exe	40
PID 2092 wrote to memory of 2556	2092	net.exe	40
PID 2092 wrote to memory of 2556	2092	net.exe	40
PID 2092 wrote to memory of 2556	2092	net.exe	40
PID 1292 wrote to memory of 2548	1292	net.exe	45
PID 1292 wrote to memory of 2548	1292	net.exe	45
PID 1292 wrote to memory of 2548	1292	net.exe	45
PID 1292 wrote to memory of 2548	1292	net.exe	45
PID 2076 wrote to memory of 2564	2076	net.exe	44
PID 2076 wrote to memory of 2564	2076	net.exe	44
PID 2076 wrote to memory of 2564	2076	net.exe	44
PID 2076 wrote to memory of 2564	2076	net.exe	44
PID 1624 wrote to memory of 22768	1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe	49
PID 1624 wrote to memory of 22768	1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe	49
PID 1624 wrote to memory of 22768	1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe	49
PID 1624 wrote to memory of 22768	1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe	49
PID 1624 wrote to memory of 22760	1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe	48
PID 1624 wrote to memory of 22760	1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe	48
PID 1624 wrote to memory of 22760	1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe	48
PID 1624 wrote to memory of 22760	1624	08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe	48
PID 22760 wrote to memory of 22812	22760	net.exe	52
PID 22760 wrote to memory of 22812	22760	net.exe	52
PID 22760 wrote to memory of 22812	22760	net.exe	52
PID 22760 wrote to memory of 22812	22760	net.exe	52

C:\Users\Admin\AppData\Local\Temp\08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe
"C:\Users\Admin\AppData\Local\Temp\08577e8c9d1c872af3ff503b0b1d60c378d841679fc7f6b3ce48affad6bc781c.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1624
- C:\Users\Admin\AppData\Local\Temp\FYqNGGm.exe
  "C:\Users\Admin\AppData\Local\Temp\FYqNGGm.exe" 8 LAN
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:648
- - C:\Windows\SysWOW64\net.exe
    "C:\Windows\System32\net.exe" stop "audioendpointbuilder" /y
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1580
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 stop "audioendpointbuilder" /y
      4⤵
      PID:2524
- - C:\Windows\SysWOW64\net.exe
    "C:\Windows\System32\net.exe" stop "samss" /y
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2100
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 stop "samss" /y
      4⤵
      PID:2540
- - C:\Windows\SysWOW64\net.exe
    "C:\Windows\System32\net.exe" stop "samss" /y
    3⤵
    PID:37032
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 stop "samss" /y
      4⤵
      PID:37060
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "audioendpointbuilder" /y
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1700
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "audioendpointbuilder" /y
    3⤵
    PID:2532
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "audioendpointbuilder" /y
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1292
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "audioendpointbuilder" /y
    3⤵
    PID:2548
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "samss" /y
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2076
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "samss" /y
    3⤵
    PID:2564
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "samss" /y
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2092
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "samss" /y
    3⤵
    PID:2556
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "samss" /y
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:22760
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "samss" /y
    3⤵
    PID:22812
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "samss" /y
  2⤵
  PID:22768
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "samss" /y
    3⤵
    PID:22820
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "samss" /y
  2⤵
  PID:36964
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "samss" /y
    3⤵
    PID:37004
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "samss" /y
  2⤵
  PID:36956
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "samss" /y
    3⤵
    PID:37012

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/1624-55-0x0000000076641000-0x0000000076643000-memory.dmp

Filesize
8KB

Download