ryuk | 2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912

Analysis

max time kernel
165s
max time network
144s
platform
windows7_x64
resource
win7-en-20211208
submitted
20-02-2022 09:01

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General

Target

2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
Size

193KB
MD5

cfb761465693bd4511f038d8e468e62e
SHA1

c8d64b3d2208a3cf40f4d9c182c9829beaa1eb86
SHA256

2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912
SHA512

2622751f9f5ab89287a1d88c9f027a7117549fcd0280f104a598c7953713d32e6ce5adfdd26abec709e1c848b8bc9f50e5226185721a22d2b3573d2d0264d36c

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	lsdyXfy.exe

Loads dropped DLL 2 IoCs

pid	Process
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.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 32 IoCs

pid	Process
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
268	lsdyXfy.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
268	lsdyXfy.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
268	lsdyXfy.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
268	lsdyXfy.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeBackupPrivilege	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
Token: SeBackupPrivilege	268	lsdyXfy.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 1396 wrote to memory of 268	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	27
PID 1396 wrote to memory of 268	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	27
PID 1396 wrote to memory of 268	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	27
PID 1396 wrote to memory of 268	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	27
PID 268 wrote to memory of 2136	268	lsdyXfy.exe	28
PID 1396 wrote to memory of 2144	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	30
PID 268 wrote to memory of 2136	268	lsdyXfy.exe	28
PID 1396 wrote to memory of 2144	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	30
PID 268 wrote to memory of 2136	268	lsdyXfy.exe	28
PID 1396 wrote to memory of 2144	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	30
PID 268 wrote to memory of 2136	268	lsdyXfy.exe	28
PID 1396 wrote to memory of 2144	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	30
PID 1396 wrote to memory of 2128	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	31
PID 1396 wrote to memory of 2128	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	31
PID 1396 wrote to memory of 2128	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	31
PID 1396 wrote to memory of 2128	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	31
PID 1396 wrote to memory of 2220	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	35
PID 1396 wrote to memory of 2220	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	35
PID 1396 wrote to memory of 2220	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	35
PID 1396 wrote to memory of 2220	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	35
PID 268 wrote to memory of 2228	268	lsdyXfy.exe	34
PID 268 wrote to memory of 2228	268	lsdyXfy.exe	34
PID 268 wrote to memory of 2228	268	lsdyXfy.exe	34
PID 268 wrote to memory of 2228	268	lsdyXfy.exe	34
PID 1396 wrote to memory of 2236	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	38
PID 1396 wrote to memory of 2236	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	38
PID 1396 wrote to memory of 2236	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	38
PID 1396 wrote to memory of 2236	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	38
PID 2128 wrote to memory of 2656	2128	net.exe	43
PID 2128 wrote to memory of 2656	2128	net.exe	43
PID 2128 wrote to memory of 2656	2128	net.exe	43
PID 2128 wrote to memory of 2656	2128	net.exe	43
PID 2136 wrote to memory of 2664	2136	net.exe	44
PID 2136 wrote to memory of 2664	2136	net.exe	44
PID 2136 wrote to memory of 2664	2136	net.exe	44
PID 2136 wrote to memory of 2664	2136	net.exe	44
PID 2144 wrote to memory of 2672	2144	net.exe	46
PID 2144 wrote to memory of 2672	2144	net.exe	46
PID 2144 wrote to memory of 2672	2144	net.exe	46
PID 2144 wrote to memory of 2672	2144	net.exe	46
PID 2228 wrote to memory of 2640	2228	net.exe	42
PID 2228 wrote to memory of 2640	2228	net.exe	42
PID 2228 wrote to memory of 2640	2228	net.exe	42
PID 2228 wrote to memory of 2640	2228	net.exe	42
PID 2236 wrote to memory of 2680	2236	net.exe	45
PID 2236 wrote to memory of 2680	2236	net.exe	45
PID 2236 wrote to memory of 2680	2236	net.exe	45
PID 2236 wrote to memory of 2680	2236	net.exe	45
PID 2220 wrote to memory of 2692	2220	net.exe	47
PID 2220 wrote to memory of 2692	2220	net.exe	47
PID 2220 wrote to memory of 2692	2220	net.exe	47
PID 2220 wrote to memory of 2692	2220	net.exe	47
PID 1396 wrote to memory of 36816	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	48
PID 1396 wrote to memory of 36816	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	48
PID 1396 wrote to memory of 36816	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	48
PID 1396 wrote to memory of 36816	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	48
PID 36816 wrote to memory of 35980	36816	net.exe	50
PID 36816 wrote to memory of 35980	36816	net.exe	50
PID 36816 wrote to memory of 35980	36816	net.exe	50
PID 36816 wrote to memory of 35980	36816	net.exe	50
PID 1396 wrote to memory of 36012	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	51
PID 1396 wrote to memory of 36012	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	51
PID 1396 wrote to memory of 36012	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	51
PID 1396 wrote to memory of 36012	1396	2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe	51

C:\Users\Admin\AppData\Local\Temp\2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe
"C:\Users\Admin\AppData\Local\Temp\2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1396
- C:\Users\Admin\AppData\Local\Temp\lsdyXfy.exe
  "C:\Users\Admin\AppData\Local\Temp\lsdyXfy.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 "audioendpointbuilder" /y
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2136
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 stop "audioendpointbuilder" /y
      4⤵
      PID:2664
- - C:\Windows\SysWOW64\net.exe
    "C:\Windows\System32\net.exe" stop "samss" /y
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2228
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 stop "samss" /y
      4⤵
      PID:2640
- - C:\Windows\SysWOW64\net.exe
    "C:\Windows\System32\net.exe" stop "samss" /y
    3⤵
    PID:36296
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 stop "samss" /y
      4⤵
      PID:36336
- - C:\Windows\SysWOW64\net.exe
    "C:\Windows\System32\net.exe" stop "samss" /y
    3⤵
    PID:51076
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 stop "samss" /y
      4⤵
      PID:51120
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "audioendpointbuilder" /y
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2144
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "audioendpointbuilder" /y
    3⤵
    PID:2672
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "audioendpointbuilder" /y
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2128
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "audioendpointbuilder" /y
    3⤵
    PID:2656
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "samss" /y
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2220
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "samss" /y
    3⤵
    PID:2692
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "samss" /y
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2236
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "samss" /y
    3⤵
    PID:2680
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "samss" /y
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:36816
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "samss" /y
    3⤵
    PID:35980
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "samss" /y
  2⤵
  PID:36012
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "samss" /y
    3⤵
    PID:36076
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "samss" /y
  2⤵
  PID:47552
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "samss" /y
    3⤵
    PID:47404
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "samss" /y
  2⤵
  PID:47516
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "samss" /y
    3⤵
    PID:47844

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/268-62-0x000000000E140000-0x000000000EBFA000-memory.dmp

Filesize
10.7MB

Download
memory/268-63-0x000000000EE40000-0x000000000EF64000-memory.dmp

Filesize
1.1MB

Download
memory/1396-55-0x0000000075AC1000-0x0000000075AC3000-memory.dmp

Filesize
8KB

Download