ryuk | 9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f

Analysis

max time kernel
164s
max time network
145s
platform
windows7_x64
resource
win7-en-20211208
submitted
20/02/2022, 04:10

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe
Size

112KB
MD5

990b689516914e33319296bf038b8d45
SHA1

c0de363450821deb850bed1a2b6880d84bd9ec3b
SHA256

9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f
SHA512

e0d42a48a286aa21415e3d5b1e6a4ce0f2947eb0b1de6b73fd13fbd450e141975d05e00a4c332349039f41fb2d71807d9242118b6c0c69392ff9bd0aa062085d

Score

10^/10

ryuk discovery ransomware

Malware Config

Extracted

Path

C:\users\Public\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\Public\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
Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware

File Deletion
T1107

Inhibit System Recovery
T1490

Executes dropped EXE 2 IoCs

pid	Process
524	FqjkICAzVlan.exe
576	RQMmrniXMlan.exe

Loads dropped DLL 4 IoCs

pid	Process
1588	9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe
1588	9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe
1588	9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe
1588	9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe

Modifies file permissions 1 TTPs 2 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
752	icacls.exe
748	icacls.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Interacts with shadow copies 2 TTPs 1 IoCs

Shadow copies are often targeted by ransomware to inhibit system recovery.

ransomware

File Deletion

T1107

Inhibit System Recovery

T1490

pid	Process
2156	vssadmin.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1588	9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe
1588	9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe
1588	9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe
1588	9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeBackupPrivilege	1588	9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe
Token: SeIncreaseQuotaPrivilege	1068	WMIC.exe
Token: SeSecurityPrivilege	1068	WMIC.exe
Token: SeTakeOwnershipPrivilege	1068	WMIC.exe
Token: SeLoadDriverPrivilege	1068	WMIC.exe
Token: SeSystemProfilePrivilege	1068	WMIC.exe
Token: SeSystemtimePrivilege	1068	WMIC.exe
Token: SeProfSingleProcessPrivilege	1068	WMIC.exe
Token: SeIncBasePriorityPrivilege	1068	WMIC.exe
Token: SeCreatePagefilePrivilege	1068	WMIC.exe
Token: SeBackupPrivilege	1068	WMIC.exe
Token: SeRestorePrivilege	1068	WMIC.exe
Token: SeShutdownPrivilege	1068	WMIC.exe
Token: SeDebugPrivilege	1068	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1068	WMIC.exe
Token: SeRemoteShutdownPrivilege	1068	WMIC.exe
Token: SeUndockPrivilege	1068	WMIC.exe
Token: SeManageVolumePrivilege	1068	WMIC.exe
Token: 33	1068	WMIC.exe
Token: 34	1068	WMIC.exe
Token: 35	1068	WMIC.exe
Token: SeBackupPrivilege	524	FqjkICAzVlan.exe
Token: SeIncreaseQuotaPrivilege	1068	WMIC.exe
Token: SeSecurityPrivilege	1068	WMIC.exe
Token: SeTakeOwnershipPrivilege	1068	WMIC.exe
Token: SeLoadDriverPrivilege	1068	WMIC.exe
Token: SeSystemProfilePrivilege	1068	WMIC.exe
Token: SeSystemtimePrivilege	1068	WMIC.exe
Token: SeProfSingleProcessPrivilege	1068	WMIC.exe
Token: SeIncBasePriorityPrivilege	1068	WMIC.exe
Token: SeCreatePagefilePrivilege	1068	WMIC.exe
Token: SeBackupPrivilege	1068	WMIC.exe
Token: SeRestorePrivilege	1068	WMIC.exe
Token: SeShutdownPrivilege	1068	WMIC.exe
Token: SeDebugPrivilege	1068	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1068	WMIC.exe
Token: SeRemoteShutdownPrivilege	1068	WMIC.exe
Token: SeUndockPrivilege	1068	WMIC.exe
Token: SeManageVolumePrivilege	1068	WMIC.exe
Token: 33	1068	WMIC.exe
Token: 34	1068	WMIC.exe
Token: 35	1068	WMIC.exe
Token: SeBackupPrivilege	576	RQMmrniXMlan.exe
Token: SeBackupPrivilege	3344	vssvc.exe
Token: SeRestorePrivilege	3344	vssvc.exe
Token: SeAuditPrivilege	3344	vssvc.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 1588 wrote to memory of 524	1588	9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe	27
PID 1588 wrote to memory of 524	1588	9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe	27
PID 1588 wrote to memory of 524	1588	9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe	27
PID 1588 wrote to memory of 524	1588	9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe	27
PID 1588 wrote to memory of 576	1588	9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe	30
PID 1588 wrote to memory of 576	1588	9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe	30
PID 1588 wrote to memory of 576	1588	9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe	30
PID 1588 wrote to memory of 576	1588	9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe	30
PID 1588 wrote to memory of 692	1588	9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe	32
PID 1588 wrote to memory of 692	1588	9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe	32
PID 1588 wrote to memory of 692	1588	9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe	32
PID 1588 wrote to memory of 692	1588	9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe	32
PID 1588 wrote to memory of 820	1588	9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe	31
PID 1588 wrote to memory of 820	1588	9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe	31
PID 1588 wrote to memory of 820	1588	9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe	31
PID 1588 wrote to memory of 820	1588	9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe	31
PID 1588 wrote to memory of 540	1588	9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe	35
PID 1588 wrote to memory of 540	1588	9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe	35
PID 1588 wrote to memory of 540	1588	9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe	35
PID 1588 wrote to memory of 540	1588	9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe	35
PID 1588 wrote to memory of 1084	1588	9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe	33
PID 1588 wrote to memory of 1084	1588	9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe	33
PID 1588 wrote to memory of 1084	1588	9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe	33
PID 1588 wrote to memory of 1084	1588	9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe	33
PID 1588 wrote to memory of 752	1588	9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe	36
PID 1588 wrote to memory of 752	1588	9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe	36
PID 1588 wrote to memory of 752	1588	9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe	36
PID 1588 wrote to memory of 752	1588	9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe	36
PID 1588 wrote to memory of 748	1588	9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe	40
PID 1588 wrote to memory of 748	1588	9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe	40
PID 1588 wrote to memory of 748	1588	9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe	40
PID 1588 wrote to memory of 748	1588	9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe	40
PID 1588 wrote to memory of 1156	1588	9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe	46
PID 1588 wrote to memory of 1156	1588	9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe	46
PID 1588 wrote to memory of 1156	1588	9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe	46
PID 1588 wrote to memory of 1156	1588	9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe	46
PID 1588 wrote to memory of 288	1588	9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe	41
PID 1588 wrote to memory of 288	1588	9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe	41
PID 1588 wrote to memory of 288	1588	9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe	41
PID 1588 wrote to memory of 288	1588	9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe	41
PID 692 wrote to memory of 1068	692	cmd.exe	42
PID 692 wrote to memory of 1068	692	cmd.exe	42
PID 692 wrote to memory of 1068	692	cmd.exe	42
PID 692 wrote to memory of 1068	692	cmd.exe	42
PID 820 wrote to memory of 2156	820	cmd.exe	47
PID 820 wrote to memory of 2156	820	cmd.exe	47
PID 820 wrote to memory of 2156	820	cmd.exe	47
PID 820 wrote to memory of 2156	820	cmd.exe	47
PID 1588 wrote to memory of 2256	1588	9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe	50
PID 1588 wrote to memory of 2256	1588	9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe	50
PID 1588 wrote to memory of 2256	1588	9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe	50
PID 1588 wrote to memory of 2256	1588	9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe	50
PID 1156 wrote to memory of 2264	1156	net.exe	49
PID 1156 wrote to memory of 2264	1156	net.exe	49
PID 1156 wrote to memory of 2264	1156	net.exe	49
PID 1156 wrote to memory of 2264	1156	net.exe	49
PID 288 wrote to memory of 2272	288	net.exe	48
PID 288 wrote to memory of 2272	288	net.exe	48
PID 288 wrote to memory of 2272	288	net.exe	48
PID 288 wrote to memory of 2272	288	net.exe	48
PID 2256 wrote to memory of 2352	2256	net.exe	52
PID 2256 wrote to memory of 2352	2256	net.exe	52
PID 2256 wrote to memory of 2352	2256	net.exe	52
PID 2256 wrote to memory of 2352	2256	net.exe	52

C:\Users\Admin\AppData\Local\Temp\9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe
"C:\Users\Admin\AppData\Local\Temp\9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1588
- C:\Users\Admin\AppData\Local\Temp\FqjkICAzVlan.exe
  "C:\Users\Admin\AppData\Local\Temp\FqjkICAzVlan.exe" 8 LAN
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:524
- C:\Users\Admin\AppData\Local\Temp\RQMmrniXMlan.exe
  "C:\Users\Admin\AppData\Local\Temp\RQMmrniXMlan.exe" 8 LAN
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:576
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c "vssadmin.exe Delete Shadows /all /quiet"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:820
- - C:\Windows\SysWOW64\vssadmin.exe
    vssadmin.exe Delete Shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:2156
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c "WMIC.exe shadowcopy delete"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:692
- - C:\Windows\SysWOW64\Wbem\WMIC.exe
    WMIC.exe shadowcopy delete
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:1068
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c "bootstatuspolicy ignoreallfailures"
  2⤵
  PID:1084
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c "bcdedit /set {default} recoveryenabled No & bcdedit /set {default}"
  2⤵
  PID:540
- C:\Windows\SysWOW64\icacls.exe
  icacls "C:\*" /grant Everyone:F /T /C /Qþ
  2⤵
  - Modifies file permissions
  PID:752
- C:\Windows\SysWOW64\icacls.exe
  icacls "D:\*" /grant Everyone:F /T /C /Qþ
  2⤵
  - Modifies file permissions
  PID:748
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "audioendpointbuilder" /y
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:288
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "audioendpointbuilder" /y
    3⤵
    PID:2272
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "audioendpointbuilder" /y
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1156
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "audioendpointbuilder" /y
    3⤵
    PID:2264
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "samss" /y
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2256
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "samss" /y
    3⤵
    PID:2352
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "samss" /y
  2⤵
  PID:2408
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "samss" /y
    3⤵
    PID:2440
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "audioendpointbuilder" /y
  2⤵
  PID:9332
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "audioendpointbuilder" /y
    3⤵
    PID:9356
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "samss" /y
  2⤵
  PID:9380
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "samss" /y
    3⤵
    PID:9404
- C:\Windows\SysWOW64\net.exe
  "C:\Windows\System32\net.exe" stop "samss" /y
  2⤵
  PID:9420
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "samss" /y
    3⤵
    PID:9444

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
PID:2780

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3344

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

File Deletion

T1107

File and Directory Permissions Modification

T1222

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Inhibit System Recovery

T1490

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1588-54-0x0000000076421000-0x0000000076423000-memory.dmp

Filesize
8KB

Download