chaos | ba29c3e7ac7e8e26bbfa8ab66ad10695379d54b2dfc4a6f6bf323e6b10c5f6ae

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
22-08-2024 11:36

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General

Target

2024-08-22_df40d08f46f5fd804a2e22f9a798ec53_wannacry.exe
Size

215KB
MD5

df40d08f46f5fd804a2e22f9a798ec53
SHA1

d7cf4c17b2163db3a83e7d593ca5f5681a39ce62
SHA256

ba29c3e7ac7e8e26bbfa8ab66ad10695379d54b2dfc4a6f6bf323e6b10c5f6ae
SHA512

29bccc4299b597fd23753c3d13f8118ce3bf5589e031dbaf3422cabf16a707d27e82e331a1c91489e682739d235525234150b1933b671edfa1f28a2a8e763840
SSDEEP

6144:S2Kr96kZBp1EvtxFzASUEEa2Xs3T/JKyL:cZBp1EvBzNUEEa2Xs3jJ

Score

10^/10

chaos defense_evasion evasion execution impact ransomware spyware stealer

Malware Config

Signatures

Chaos
Ransomware family first seen in June 2021.
ransomware chaos

Chaos Ransomware 3 IoCs

resource	yara_rule
behavioral1/memory/2708-1-0x00000000001A0000-0x00000000001DC000-memory.dmp	family_chaos
behavioral1/files/0x000700000001211b-4.dat	family_chaos
behavioral1/memory/2428-7-0x0000000000C10000-0x0000000000C4C000-memory.dmp	family_chaos

Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware defense_evasion impact execution

File Deletion
T1070.004

Inhibit System Recovery
T1490

Windows Management Instrumentation
T1047

Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs

ransomware evasion

Inhibit System Recovery

T1490

pid	Process
2484	bcdedit.exe
2356	bcdedit.exe

Deletes backup catalog 3 TTPs 1 IoCs

Uses wbadmin.exe to inhibit system recovery.

ransomware

Command and Scripting Interpreter

T1059

File Deletion

T1070.004

Inhibit System Recovery

T1490

pid	Process
948	wbadmin.exe

Drops startup file 3 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\BeniOku!.txt	Adobe Reader.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Adobe Reader.url	Adobe Reader.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini	Adobe Reader.exe

Executes dropped EXE 1 IoCs

pid	Process
2428	Adobe Reader.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Drops desktop.ini file(s) 34 IoCs

description	ioc	Process
File opened for modification	C:\Users\Public\Music\Sample Music\desktop.ini	Adobe Reader.exe
File opened for modification	C:\Users\Admin\Saved Games\desktop.ini	Adobe Reader.exe
File opened for modification	C:\Users\Admin\Searches\desktop.ini	Adobe Reader.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini	Adobe Reader.exe
File opened for modification	C:\Users\Public\Pictures\desktop.ini	Adobe Reader.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-3434294380-2554721341-1919518612-1000\desktop.ini	Adobe Reader.exe
File opened for modification	C:\Users\Admin\Favorites\desktop.ini	Adobe Reader.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini	Adobe Reader.exe
File opened for modification	C:\Users\Admin\Music\desktop.ini	Adobe Reader.exe
File opened for modification	C:\Users\Public\Music\desktop.ini	Adobe Reader.exe
File opened for modification	C:\Users\Admin\Favorites\Links\desktop.ini	Adobe Reader.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini	Adobe Reader.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini	Adobe Reader.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini	Adobe Reader.exe
File opened for modification	C:\Users\Public\Pictures\Sample Pictures\desktop.ini	Adobe Reader.exe
File opened for modification	C:\Users\Public\Videos\Sample Videos\desktop.ini	Adobe Reader.exe
File opened for modification	C:\Users\Public\Desktop\desktop.ini	Adobe Reader.exe
File opened for modification	C:\Users\Admin\Links\desktop.ini	Adobe Reader.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	Adobe Reader.exe
File opened for modification	C:\Users\Admin\Downloads\desktop.ini	Adobe Reader.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini	Adobe Reader.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini	Adobe Reader.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini	Adobe Reader.exe
File opened for modification	C:\Users\Public\Videos\desktop.ini	Adobe Reader.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	Adobe Reader.exe
File opened for modification	C:\Users\Admin\Contacts\desktop.ini	Adobe Reader.exe
File opened for modification	C:\Users\Admin\Favorites\Links for United States\desktop.ini	Adobe Reader.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini	Adobe Reader.exe
File opened for modification	C:\Users\Public\Documents\desktop.ini	Adobe Reader.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	Adobe Reader.exe
File opened for modification	C:\Users\Admin\Videos\desktop.ini	Adobe Reader.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini	Adobe Reader.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini	Adobe Reader.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini	Adobe Reader.exe

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3434294380-2554721341-1919518612-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\0po5ied5r.jpg"	Adobe Reader.exe

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

System Information Discovery
T1082

Interacts with shadow copies 3 TTPs 1 IoCs

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

ransomware

File Deletion

T1070.004

Inhibit System Recovery

T1490

Direct Volume Access

T1006

pid	Process
1108	vssadmin.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2428	Adobe Reader.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
2708	2024-08-22_df40d08f46f5fd804a2e22f9a798ec53_wannacry.exe
2708	2024-08-22_df40d08f46f5fd804a2e22f9a798ec53_wannacry.exe
2708	2024-08-22_df40d08f46f5fd804a2e22f9a798ec53_wannacry.exe
2428	Adobe Reader.exe
2428	Adobe Reader.exe
2428	Adobe Reader.exe
2428	Adobe Reader.exe
2428	Adobe Reader.exe
2428	Adobe Reader.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	2708	2024-08-22_df40d08f46f5fd804a2e22f9a798ec53_wannacry.exe
Token: SeDebugPrivilege	2428	Adobe Reader.exe
Token: SeBackupPrivilege	112	vssvc.exe
Token: SeRestorePrivilege	112	vssvc.exe
Token: SeAuditPrivilege	112	vssvc.exe
Token: SeIncreaseQuotaPrivilege	820	WMIC.exe
Token: SeSecurityPrivilege	820	WMIC.exe
Token: SeTakeOwnershipPrivilege	820	WMIC.exe
Token: SeLoadDriverPrivilege	820	WMIC.exe
Token: SeSystemProfilePrivilege	820	WMIC.exe
Token: SeSystemtimePrivilege	820	WMIC.exe
Token: SeProfSingleProcessPrivilege	820	WMIC.exe
Token: SeIncBasePriorityPrivilege	820	WMIC.exe
Token: SeCreatePagefilePrivilege	820	WMIC.exe
Token: SeBackupPrivilege	820	WMIC.exe
Token: SeRestorePrivilege	820	WMIC.exe
Token: SeShutdownPrivilege	820	WMIC.exe
Token: SeDebugPrivilege	820	WMIC.exe
Token: SeSystemEnvironmentPrivilege	820	WMIC.exe
Token: SeRemoteShutdownPrivilege	820	WMIC.exe
Token: SeUndockPrivilege	820	WMIC.exe
Token: SeManageVolumePrivilege	820	WMIC.exe
Token: 33	820	WMIC.exe
Token: 34	820	WMIC.exe
Token: 35	820	WMIC.exe
Token: SeIncreaseQuotaPrivilege	820	WMIC.exe
Token: SeSecurityPrivilege	820	WMIC.exe
Token: SeTakeOwnershipPrivilege	820	WMIC.exe
Token: SeLoadDriverPrivilege	820	WMIC.exe
Token: SeSystemProfilePrivilege	820	WMIC.exe
Token: SeSystemtimePrivilege	820	WMIC.exe
Token: SeProfSingleProcessPrivilege	820	WMIC.exe
Token: SeIncBasePriorityPrivilege	820	WMIC.exe
Token: SeCreatePagefilePrivilege	820	WMIC.exe
Token: SeBackupPrivilege	820	WMIC.exe
Token: SeRestorePrivilege	820	WMIC.exe
Token: SeShutdownPrivilege	820	WMIC.exe
Token: SeDebugPrivilege	820	WMIC.exe
Token: SeSystemEnvironmentPrivilege	820	WMIC.exe
Token: SeRemoteShutdownPrivilege	820	WMIC.exe
Token: SeUndockPrivilege	820	WMIC.exe
Token: SeManageVolumePrivilege	820	WMIC.exe
Token: 33	820	WMIC.exe
Token: 34	820	WMIC.exe
Token: 35	820	WMIC.exe
Token: SeBackupPrivilege	1856	wbengine.exe
Token: SeRestorePrivilege	1856	wbengine.exe
Token: SeSecurityPrivilege	1856	wbengine.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2708 wrote to memory of 2428	2708	2024-08-22_df40d08f46f5fd804a2e22f9a798ec53_wannacry.exe	30
PID 2708 wrote to memory of 2428	2708	2024-08-22_df40d08f46f5fd804a2e22f9a798ec53_wannacry.exe	30
PID 2708 wrote to memory of 2428	2708	2024-08-22_df40d08f46f5fd804a2e22f9a798ec53_wannacry.exe	30
PID 2428 wrote to memory of 668	2428	Adobe Reader.exe	32
PID 2428 wrote to memory of 668	2428	Adobe Reader.exe	32
PID 2428 wrote to memory of 668	2428	Adobe Reader.exe	32
PID 668 wrote to memory of 1108	668	cmd.exe	34
PID 668 wrote to memory of 1108	668	cmd.exe	34
PID 668 wrote to memory of 1108	668	cmd.exe	34
PID 668 wrote to memory of 820	668	cmd.exe	37
PID 668 wrote to memory of 820	668	cmd.exe	37
PID 668 wrote to memory of 820	668	cmd.exe	37
PID 2428 wrote to memory of 304	2428	Adobe Reader.exe	39
PID 2428 wrote to memory of 304	2428	Adobe Reader.exe	39
PID 2428 wrote to memory of 304	2428	Adobe Reader.exe	39
PID 304 wrote to memory of 2484	304	cmd.exe	41
PID 304 wrote to memory of 2484	304	cmd.exe	41
PID 304 wrote to memory of 2484	304	cmd.exe	41
PID 304 wrote to memory of 2356	304	cmd.exe	42
PID 304 wrote to memory of 2356	304	cmd.exe	42
PID 304 wrote to memory of 2356	304	cmd.exe	42
PID 2428 wrote to memory of 1080	2428	Adobe Reader.exe	43
PID 2428 wrote to memory of 1080	2428	Adobe Reader.exe	43
PID 2428 wrote to memory of 1080	2428	Adobe Reader.exe	43
PID 1080 wrote to memory of 948	1080	cmd.exe	45
PID 1080 wrote to memory of 948	1080	cmd.exe	45
PID 1080 wrote to memory of 948	1080	cmd.exe	45
PID 2428 wrote to memory of 1976	2428	Adobe Reader.exe	49
PID 2428 wrote to memory of 1976	2428	Adobe Reader.exe	49
PID 2428 wrote to memory of 1976	2428	Adobe Reader.exe	49

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012
Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

C:\Users\Admin\AppData\Local\Temp\2024-08-22_df40d08f46f5fd804a2e22f9a798ec53_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-08-22_df40d08f46f5fd804a2e22f9a798ec53_wannacry.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2708
- C:\Users\Admin\AppData\Roaming\Adobe Reader.exe
  "C:\Users\Admin\AppData\Roaming\Adobe Reader.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Drops desktop.ini file(s)
  - Sets desktop wallpaper using registry
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2428
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:668
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:1108
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:820
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C bcdedit /set {default} bootstatuspolicy ignoreallfailures & bcdedit /set {default} recoveryenabled no
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:304
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2484
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2356
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1080
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:948
- - C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\BeniOku!.txt
    3⤵
    PID:1976

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:112

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1856

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:1352

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:1648

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Windows Management Instrumentation

T1047

Persistence

Privilege Escalation

Defense Evasion

Direct Volume Access

T1006

Indicator Removal

T1070

File Deletion

T1070.004

Modify Registry

T1112

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Defacement

T1491

Inhibit System Recovery

T1490

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Adobe Reader.exe

Filesize
215KB

MD5
df40d08f46f5fd804a2e22f9a798ec53

SHA1
d7cf4c17b2163db3a83e7d593ca5f5681a39ce62

SHA256
ba29c3e7ac7e8e26bbfa8ab66ad10695379d54b2dfc4a6f6bf323e6b10c5f6ae

SHA512
29bccc4299b597fd23753c3d13f8118ce3bf5589e031dbaf3422cabf16a707d27e82e331a1c91489e682739d235525234150b1933b671edfa1f28a2a8e763840

Download Submit
C:\Users\Admin\Documents\BeniOku!.txt

Filesize
998B

MD5
05c88b2bac44ab6d86bb3d8bd3ed0a59

SHA1
30727c0b9da704e7849f83a8cbeec3cd03c13229

SHA256
8356bb4ee684bd4518c5e34dcda4981134a3de2b133f4e646cdf2fca57315cdd

SHA512
679a8a7731b607a7e30f6ccd9576269332bc013f70b7e802d134670218b9588c940e3dcd2627c3d11529299633f6347267f13551e5849f6ecd14f37bb6947a7f

Download Submit
memory/2428-7-0x0000000000C10000-0x0000000000C4C000-memory.dmp

Filesize
240KB

Download
memory/2428-9-0x000007FEF53D0000-0x000007FEF5DBC000-memory.dmp

Filesize
9.9MB

Download
memory/2428-22-0x000007FEF53D0000-0x000007FEF5DBC000-memory.dmp

Filesize
9.9MB

Download
memory/2428-482-0x000007FEF53D0000-0x000007FEF5DBC000-memory.dmp

Filesize
9.9MB

Download
memory/2708-0-0x000007FEF53D3000-0x000007FEF53D4000-memory.dmp

Filesize
4KB

Download
memory/2708-1-0x00000000001A0000-0x00000000001DC000-memory.dmp

Filesize
240KB

Download