ryuk | e63a0fdaaaf0aa3363522e1db78c9f06babb6cfb452aa8cd139aee77e8cbc15a

Analysis

max time kernel
156s
max time network
64s
platform
windows7_x64
resource
win7-en-20211208
submitted
20/02/2022, 00:57

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General

Target

e63a0fdaaaf0aa3363522e1db78c9f06babb6cfb452aa8cd139aee77e8cbc15a.exe
Size

190KB
MD5

fb0cc68e9679d61aa39779cabc5e6196
SHA1

fe91a5a32aa26e92925426b88f810b215610d8b4
SHA256

e63a0fdaaaf0aa3363522e1db78c9f06babb6cfb452aa8cd139aee77e8cbc15a
SHA512

12ae1da23953ba65108aa2358942a77c442e57580fde053b435569d7ac15af6b077a8febf4d2d36489ca4aae130e6a737d4ff2e60f0aebecc9fe491f4614b54e

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
268	oyjOuyK.exe

Loads dropped DLL 2 IoCs

pid	Process
1568	e63a0fdaaaf0aa3363522e1db78c9f06babb6cfb452aa8cd139aee77e8cbc15a.exe
1568	e63a0fdaaaf0aa3363522e1db78c9f06babb6cfb452aa8cd139aee77e8cbc15a.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
1568	e63a0fdaaaf0aa3363522e1db78c9f06babb6cfb452aa8cd139aee77e8cbc15a.exe
1568	e63a0fdaaaf0aa3363522e1db78c9f06babb6cfb452aa8cd139aee77e8cbc15a.exe
268	oyjOuyK.exe
1568	e63a0fdaaaf0aa3363522e1db78c9f06babb6cfb452aa8cd139aee77e8cbc15a.exe
1568	e63a0fdaaaf0aa3363522e1db78c9f06babb6cfb452aa8cd139aee77e8cbc15a.exe
268	oyjOuyK.exe
1568	e63a0fdaaaf0aa3363522e1db78c9f06babb6cfb452aa8cd139aee77e8cbc15a.exe
1568	e63a0fdaaaf0aa3363522e1db78c9f06babb6cfb452aa8cd139aee77e8cbc15a.exe
268	oyjOuyK.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeBackupPrivilege	1568	e63a0fdaaaf0aa3363522e1db78c9f06babb6cfb452aa8cd139aee77e8cbc15a.exe
Token: SeBackupPrivilege	268	oyjOuyK.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 1568 wrote to memory of 268	1568	e63a0fdaaaf0aa3363522e1db78c9f06babb6cfb452aa8cd139aee77e8cbc15a.exe	27
PID 1568 wrote to memory of 268	1568	e63a0fdaaaf0aa3363522e1db78c9f06babb6cfb452aa8cd139aee77e8cbc15a.exe	27
PID 1568 wrote to memory of 268	1568	e63a0fdaaaf0aa3363522e1db78c9f06babb6cfb452aa8cd139aee77e8cbc15a.exe	27
PID 1568 wrote to memory of 268	1568	e63a0fdaaaf0aa3363522e1db78c9f06babb6cfb452aa8cd139aee77e8cbc15a.exe	27
PID 1568 wrote to memory of 580	1568	e63a0fdaaaf0aa3363522e1db78c9f06babb6cfb452aa8cd139aee77e8cbc15a.exe	28
PID 1568 wrote to memory of 580	1568	e63a0fdaaaf0aa3363522e1db78c9f06babb6cfb452aa8cd139aee77e8cbc15a.exe	28
PID 1568 wrote to memory of 580	1568	e63a0fdaaaf0aa3363522e1db78c9f06babb6cfb452aa8cd139aee77e8cbc15a.exe	28
PID 1568 wrote to memory of 580	1568	e63a0fdaaaf0aa3363522e1db78c9f06babb6cfb452aa8cd139aee77e8cbc15a.exe	28
PID 1568 wrote to memory of 568	1568	e63a0fdaaaf0aa3363522e1db78c9f06babb6cfb452aa8cd139aee77e8cbc15a.exe	30
PID 1568 wrote to memory of 568	1568	e63a0fdaaaf0aa3363522e1db78c9f06babb6cfb452aa8cd139aee77e8cbc15a.exe	30
PID 1568 wrote to memory of 568	1568	e63a0fdaaaf0aa3363522e1db78c9f06babb6cfb452aa8cd139aee77e8cbc15a.exe	30
PID 1568 wrote to memory of 568	1568	e63a0fdaaaf0aa3363522e1db78c9f06babb6cfb452aa8cd139aee77e8cbc15a.exe	30
PID 580 wrote to memory of 1408	580	net.exe	33
PID 580 wrote to memory of 1408	580	net.exe	33
PID 580 wrote to memory of 1408	580	net.exe	33
PID 580 wrote to memory of 1408	580	net.exe	33
PID 568 wrote to memory of 1820	568	net.exe	32
PID 568 wrote to memory of 1820	568	net.exe	32
PID 568 wrote to memory of 1820	568	net.exe	32
PID 568 wrote to memory of 1820	568	net.exe	32
PID 1568 wrote to memory of 1836	1568	e63a0fdaaaf0aa3363522e1db78c9f06babb6cfb452aa8cd139aee77e8cbc15a.exe	34
PID 1568 wrote to memory of 1836	1568	e63a0fdaaaf0aa3363522e1db78c9f06babb6cfb452aa8cd139aee77e8cbc15a.exe	34
PID 1568 wrote to memory of 1836	1568	e63a0fdaaaf0aa3363522e1db78c9f06babb6cfb452aa8cd139aee77e8cbc15a.exe	34
PID 1568 wrote to memory of 1836	1568	e63a0fdaaaf0aa3363522e1db78c9f06babb6cfb452aa8cd139aee77e8cbc15a.exe	34
PID 1836 wrote to memory of 452	1836	net.exe	36
PID 1836 wrote to memory of 452	1836	net.exe	36
PID 1836 wrote to memory of 452	1836	net.exe	36
PID 1836 wrote to memory of 452	1836	net.exe	36
PID 1568 wrote to memory of 1524	1568	e63a0fdaaaf0aa3363522e1db78c9f06babb6cfb452aa8cd139aee77e8cbc15a.exe	37
PID 1568 wrote to memory of 1524	1568	e63a0fdaaaf0aa3363522e1db78c9f06babb6cfb452aa8cd139aee77e8cbc15a.exe	37
PID 1568 wrote to memory of 1524	1568	e63a0fdaaaf0aa3363522e1db78c9f06babb6cfb452aa8cd139aee77e8cbc15a.exe	37
PID 1568 wrote to memory of 1524	1568	e63a0fdaaaf0aa3363522e1db78c9f06babb6cfb452aa8cd139aee77e8cbc15a.exe	37
PID 1524 wrote to memory of 1124	1524	net.exe	39
PID 1524 wrote to memory of 1124	1524	net.exe	39
PID 1524 wrote to memory of 1124	1524	net.exe	39
PID 1524 wrote to memory of 1124	1524	net.exe	39
PID 268 wrote to memory of 3172	268	oyjOuyK.exe	40
PID 268 wrote to memory of 3172	268	oyjOuyK.exe	40
PID 268 wrote to memory of 3172	268	oyjOuyK.exe	40
PID 268 wrote to memory of 3172	268	oyjOuyK.exe	40
PID 3172 wrote to memory of 3196	3172	net.exe	42
PID 3172 wrote to memory of 3196	3172	net.exe	42
PID 3172 wrote to memory of 3196	3172	net.exe	42
PID 3172 wrote to memory of 3196	3172	net.exe	42
PID 1568 wrote to memory of 8484	1568	e63a0fdaaaf0aa3363522e1db78c9f06babb6cfb452aa8cd139aee77e8cbc15a.exe	43
PID 1568 wrote to memory of 8484	1568	e63a0fdaaaf0aa3363522e1db78c9f06babb6cfb452aa8cd139aee77e8cbc15a.exe	43
PID 1568 wrote to memory of 8484	1568	e63a0fdaaaf0aa3363522e1db78c9f06babb6cfb452aa8cd139aee77e8cbc15a.exe	43
PID 1568 wrote to memory of 8484	1568	e63a0fdaaaf0aa3363522e1db78c9f06babb6cfb452aa8cd139aee77e8cbc15a.exe	43
PID 8484 wrote to memory of 8508	8484	net.exe	45
PID 8484 wrote to memory of 8508	8484	net.exe	45
PID 8484 wrote to memory of 8508	8484	net.exe	45
PID 8484 wrote to memory of 8508	8484	net.exe	45
PID 1568 wrote to memory of 8524	1568	e63a0fdaaaf0aa3363522e1db78c9f06babb6cfb452aa8cd139aee77e8cbc15a.exe	46
PID 1568 wrote to memory of 8524	1568	e63a0fdaaaf0aa3363522e1db78c9f06babb6cfb452aa8cd139aee77e8cbc15a.exe	46
PID 1568 wrote to memory of 8524	1568	e63a0fdaaaf0aa3363522e1db78c9f06babb6cfb452aa8cd139aee77e8cbc15a.exe	46
PID 1568 wrote to memory of 8524	1568	e63a0fdaaaf0aa3363522e1db78c9f06babb6cfb452aa8cd139aee77e8cbc15a.exe	46
PID 8524 wrote to memory of 8548	8524	net.exe	48
PID 8524 wrote to memory of 8548	8524	net.exe	48
PID 8524 wrote to memory of 8548	8524	net.exe	48
PID 8524 wrote to memory of 8548	8524	net.exe	48
PID 268 wrote to memory of 8576	268	oyjOuyK.exe	50
PID 268 wrote to memory of 8576	268	oyjOuyK.exe	50
PID 268 wrote to memory of 8576	268	oyjOuyK.exe	50
PID 268 wrote to memory of 8576	268	oyjOuyK.exe	50

C:\Users\Admin\AppData\Local\Temp\e63a0fdaaaf0aa3363522e1db78c9f06babb6cfb452aa8cd139aee77e8cbc15a.exe
"C:\Users\Admin\AppData\Local\Temp\e63a0fdaaaf0aa3363522e1db78c9f06babb6cfb452aa8cd139aee77e8cbc15a.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1568
- C:\Users\Admin\AppData\Local\Temp\oyjOuyK.exe
  "C:\Users\Admin\AppData\Local\Temp\oyjOuyK.exe" 8 LAN
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:268
- - C:\Windows\SysWOW64\net.exe
    "C:\Windows\System32\net.exe" stop "samss" /y
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3172
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 stop "samss" /y
      4⤵
      PID:3196
- - C:\Windows\SysWOW64\net.exe
    "C:\Windows\System32\net.exe" stop "samss" /y
    3⤵
    PID:8576
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 stop "samss" /y
      4⤵
      PID:8620
- - C:\Windows\SysWOW64\net.exe
    "C:\Windows\System32\net.exe" stop "samss" /y
    3⤵
    PID:36620
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 stop "samss" /y
      4⤵
      PID:36712
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "audioendpointbuilder" /y
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:580
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "audioendpointbuilder" /y
    3⤵
    PID:1408
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "samss" /y
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:568
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "samss" /y
    3⤵
    PID:1820
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "audioendpointbuilder" /y
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1836
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "audioendpointbuilder" /y
    3⤵
    PID:452
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "samss" /y
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1524
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "samss" /y
    3⤵
    PID:1124
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "samss" /y
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:8484
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "samss" /y
    3⤵
    PID:8508
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "samss" /y
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:8524
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "samss" /y
    3⤵
    PID:8548
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "samss" /y
  2⤵
  PID:36448
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "samss" /y
    3⤵
    PID:36484
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "samss" /y
  2⤵
  PID:36512
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "samss" /y
    3⤵
    PID:36580

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/1568-54-0x0000000075CE1000-0x0000000075CE3000-memory.dmp

Filesize
8KB

Download