chaos | 8d20fefdcc204570b0d19b26fd99553ea89697b3646073b769466aa8ac5fc730

Analysis

max time kernel
120s
max time network
124s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
17-02-2024 11:25

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General

Target

2024-02-17_22c442d48aa7c9f9d35eecd0666dea14_wannacry.exe
Size

317KB
MD5

22c442d48aa7c9f9d35eecd0666dea14
SHA1

a1fdc523787aa5c068613867d0b6c27ee40b70e1
SHA256

8d20fefdcc204570b0d19b26fd99553ea89697b3646073b769466aa8ac5fc730
SHA512

1d8705708afeccaaaf467d6466d0dbaa6097b2942c7b45c548175c17b771182e89c7557175b8d830ae9e721471aad20ce0902d6861ab3bb9c35a1cf334f2a308
SSDEEP

1536:Ho2jYNMNXr9MaAQ/e9rh12xwpUlwhNNxI5/fbBIGbtGutFnL5iU66tDwU1yw+TN+:HojMNXr9MaAQ/eH6wp2wjW/jIIv

Score

10^/10

chaos evasion ransomware spyware stealer

Malware Config

Signatures

Chaos
Ransomware family first seen in June 2021.
ransomware chaos

Chaos Ransomware 4 IoCs

resource	yara_rule
behavioral1/memory/2300-0-0x00000000009F0000-0x0000000000A44000-memory.dmp	family_chaos
behavioral1/files/0x000e000000012232-5.dat	family_chaos
behavioral1/memory/2720-7-0x0000000000B50000-0x0000000000BA4000-memory.dmp	family_chaos
behavioral1/memory/2720-11-0x000000001ABB0000-0x000000001AC30000-memory.dmp	family_chaos

Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware

File Deletion
T1070.004

Inhibit System Recovery
T1490

Detects command variations typically used by ransomware 4 IoCs

resource	yara_rule
behavioral1/memory/2300-0-0x00000000009F0000-0x0000000000A44000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware
behavioral1/files/0x000e000000012232-5.dat	INDICATOR_SUSPICIOUS_GENRansomware
behavioral1/memory/2720-7-0x0000000000B50000-0x0000000000BA4000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware
behavioral1/memory/2720-11-0x000000001ABB0000-0x000000001AC30000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware

Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs

ransomware evasion

Inhibit System Recovery

T1490

pid	Process
2408	bcdedit.exe
2116	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
3004	wbadmin.exe

Drops startup file 3 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
2720	tikcp.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\desktop.ini	tikcp.exe
File opened for modification	C:\Users\Admin\Links\desktop.ini	tikcp.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	tikcp.exe
File opened for modification	C:\Users\Admin\Downloads\desktop.ini	tikcp.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	tikcp.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini	tikcp.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini	tikcp.exe
File opened for modification	C:\Users\Admin\Saved Games\desktop.ini	tikcp.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini	tikcp.exe
File opened for modification	C:\Users\Public\Pictures\Sample Pictures\desktop.ini	tikcp.exe
File opened for modification	C:\Users\Public\Music\Sample Music\desktop.ini	tikcp.exe
File opened for modification	C:\Users\Public\Desktop\desktop.ini	tikcp.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	tikcp.exe
File opened for modification	C:\Users\Admin\Contacts\desktop.ini	tikcp.exe
File opened for modification	C:\Users\Admin\Favorites\Links\desktop.ini	tikcp.exe
File opened for modification	C:\Users\Admin\Videos\desktop.ini	tikcp.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini	tikcp.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini	tikcp.exe
File opened for modification	C:\Users\Public\Documents\desktop.ini	tikcp.exe
File opened for modification	C:\Users\Admin\Favorites\Links for United States\desktop.ini	tikcp.exe
File opened for modification	C:\Users\Admin\Searches\desktop.ini	tikcp.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini	tikcp.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini	tikcp.exe
File opened for modification	C:\Users\Public\Pictures\desktop.ini	tikcp.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-3427588347-1492276948-3422228430-1000\desktop.ini	tikcp.exe
File opened for modification	C:\Users\Admin\Music\desktop.ini	tikcp.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini	tikcp.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini	tikcp.exe
File opened for modification	C:\Users\Public\Videos\desktop.ini	tikcp.exe
File opened for modification	C:\Users\Public\Videos\Sample Videos\desktop.ini	tikcp.exe
File opened for modification	C:\Users\Admin\Favorites\desktop.ini	tikcp.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini	tikcp.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini	tikcp.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini	tikcp.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-1-5-21-3427588347-1492276948-3422228430-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\g4b8o9frg.jpg"	tikcp.exe

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

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

T1070.004

Inhibit System Recovery

T1490

pid	Process
364	vssadmin.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
1740	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2720	tikcp.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2300	2024-02-17_22c442d48aa7c9f9d35eecd0666dea14_wannacry.exe
2300	2024-02-17_22c442d48aa7c9f9d35eecd0666dea14_wannacry.exe
2720	tikcp.exe
2720	tikcp.exe
2720	tikcp.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	2300	2024-02-17_22c442d48aa7c9f9d35eecd0666dea14_wannacry.exe
Token: SeDebugPrivilege	2720	tikcp.exe
Token: SeBackupPrivilege	1876	vssvc.exe
Token: SeRestorePrivilege	1876	vssvc.exe
Token: SeAuditPrivilege	1876	vssvc.exe
Token: SeIncreaseQuotaPrivilege	1664	WMIC.exe
Token: SeSecurityPrivilege	1664	WMIC.exe
Token: SeTakeOwnershipPrivilege	1664	WMIC.exe
Token: SeLoadDriverPrivilege	1664	WMIC.exe
Token: SeSystemProfilePrivilege	1664	WMIC.exe
Token: SeSystemtimePrivilege	1664	WMIC.exe
Token: SeProfSingleProcessPrivilege	1664	WMIC.exe
Token: SeIncBasePriorityPrivilege	1664	WMIC.exe
Token: SeCreatePagefilePrivilege	1664	WMIC.exe
Token: SeBackupPrivilege	1664	WMIC.exe
Token: SeRestorePrivilege	1664	WMIC.exe
Token: SeShutdownPrivilege	1664	WMIC.exe
Token: SeDebugPrivilege	1664	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1664	WMIC.exe
Token: SeRemoteShutdownPrivilege	1664	WMIC.exe
Token: SeUndockPrivilege	1664	WMIC.exe
Token: SeManageVolumePrivilege	1664	WMIC.exe
Token: 33	1664	WMIC.exe
Token: 34	1664	WMIC.exe
Token: 35	1664	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1664	WMIC.exe
Token: SeSecurityPrivilege	1664	WMIC.exe
Token: SeTakeOwnershipPrivilege	1664	WMIC.exe
Token: SeLoadDriverPrivilege	1664	WMIC.exe
Token: SeSystemProfilePrivilege	1664	WMIC.exe
Token: SeSystemtimePrivilege	1664	WMIC.exe
Token: SeProfSingleProcessPrivilege	1664	WMIC.exe
Token: SeIncBasePriorityPrivilege	1664	WMIC.exe
Token: SeCreatePagefilePrivilege	1664	WMIC.exe
Token: SeBackupPrivilege	1664	WMIC.exe
Token: SeRestorePrivilege	1664	WMIC.exe
Token: SeShutdownPrivilege	1664	WMIC.exe
Token: SeDebugPrivilege	1664	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1664	WMIC.exe
Token: SeRemoteShutdownPrivilege	1664	WMIC.exe
Token: SeUndockPrivilege	1664	WMIC.exe
Token: SeManageVolumePrivilege	1664	WMIC.exe
Token: 33	1664	WMIC.exe
Token: 34	1664	WMIC.exe
Token: 35	1664	WMIC.exe
Token: SeBackupPrivilege	2144	wbengine.exe
Token: SeRestorePrivilege	2144	wbengine.exe
Token: SeSecurityPrivilege	2144	wbengine.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2300 wrote to memory of 2720	2300	2024-02-17_22c442d48aa7c9f9d35eecd0666dea14_wannacry.exe	28
PID 2300 wrote to memory of 2720	2300	2024-02-17_22c442d48aa7c9f9d35eecd0666dea14_wannacry.exe	28
PID 2300 wrote to memory of 2720	2300	2024-02-17_22c442d48aa7c9f9d35eecd0666dea14_wannacry.exe	28
PID 2720 wrote to memory of 936	2720	tikcp.exe	30
PID 2720 wrote to memory of 936	2720	tikcp.exe	30
PID 2720 wrote to memory of 936	2720	tikcp.exe	30
PID 936 wrote to memory of 364	936	cmd.exe	32
PID 936 wrote to memory of 364	936	cmd.exe	32
PID 936 wrote to memory of 364	936	cmd.exe	32
PID 936 wrote to memory of 1664	936	cmd.exe	36
PID 936 wrote to memory of 1664	936	cmd.exe	36
PID 936 wrote to memory of 1664	936	cmd.exe	36
PID 2720 wrote to memory of 1104	2720	tikcp.exe	38
PID 2720 wrote to memory of 1104	2720	tikcp.exe	38
PID 2720 wrote to memory of 1104	2720	tikcp.exe	38
PID 1104 wrote to memory of 2408	1104	cmd.exe	40
PID 1104 wrote to memory of 2408	1104	cmd.exe	40
PID 1104 wrote to memory of 2408	1104	cmd.exe	40
PID 1104 wrote to memory of 2116	1104	cmd.exe	41
PID 1104 wrote to memory of 2116	1104	cmd.exe	41
PID 1104 wrote to memory of 2116	1104	cmd.exe	41
PID 2720 wrote to memory of 1212	2720	tikcp.exe	42
PID 2720 wrote to memory of 1212	2720	tikcp.exe	42
PID 2720 wrote to memory of 1212	2720	tikcp.exe	42
PID 1212 wrote to memory of 3004	1212	cmd.exe	44
PID 1212 wrote to memory of 3004	1212	cmd.exe	44
PID 1212 wrote to memory of 3004	1212	cmd.exe	44
PID 2720 wrote to memory of 1740	2720	tikcp.exe	48
PID 2720 wrote to memory of 1740	2720	tikcp.exe	48
PID 2720 wrote to memory of 1740	2720	tikcp.exe	48

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\2024-02-17_22c442d48aa7c9f9d35eecd0666dea14_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-17_22c442d48aa7c9f9d35eecd0666dea14_wannacry.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2300
- C:\Users\Admin\AppData\Roaming\tikcp.exe
  "C:\Users\Admin\AppData\Roaming\tikcp.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:2720
- - 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:936
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:364
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:1664
- - 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:1104
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2408
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2116
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1212
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:3004
- - C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\read_it.txt
    3⤵
    - Opens file in notepad (likely ransom note)
    PID:1740

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1876

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2144

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:824

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:2016

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Persistence

Privilege Escalation

Defense Evasion

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\tikcp.exe

Filesize
317KB

MD5
22c442d48aa7c9f9d35eecd0666dea14

SHA1
a1fdc523787aa5c068613867d0b6c27ee40b70e1

SHA256
8d20fefdcc204570b0d19b26fd99553ea89697b3646073b769466aa8ac5fc730

SHA512
1d8705708afeccaaaf467d6466d0dbaa6097b2942c7b45c548175c17b771182e89c7557175b8d830ae9e721471aad20ce0902d6861ab3bb9c35a1cf334f2a308

Download Submit
C:\Users\Admin\Documents\read_it.txt

Filesize
729B

MD5
6307522e98de22e159d4f7e943a92c20

SHA1
788a9f81a924b60246ebb96b13aaf9df53e4a5ba

SHA256
a77f348ad194923a42d74f5b8e225ddf713b4d651d228638f8379d1aa1a37379

SHA512
59354eaf95a8af38366afa5e16379e901ef6bc391119bd14385249dbda1cec789ccb93e220b0ac9d3af11eefea555d13a4bb1321c68489c7997f78788244faae

Download Submit
memory/2300-0-0x00000000009F0000-0x0000000000A44000-memory.dmp

Filesize
336KB

Download
memory/2300-1-0x000007FEF5B00000-0x000007FEF64EC000-memory.dmp

Filesize
9.9MB

Download
memory/2300-8-0x000007FEF5B00000-0x000007FEF64EC000-memory.dmp

Filesize
9.9MB

Download
memory/2720-7-0x0000000000B50000-0x0000000000BA4000-memory.dmp

Filesize
336KB

Download
memory/2720-9-0x000007FEF5B00000-0x000007FEF64EC000-memory.dmp

Filesize
9.9MB

Download
memory/2720-11-0x000000001ABB0000-0x000000001AC30000-memory.dmp

Filesize
512KB

Download
memory/2720-467-0x000007FEF5B00000-0x000007FEF64EC000-memory.dmp

Filesize
9.9MB

Download
memory/2720-468-0x000000001ABB0000-0x000000001AC30000-memory.dmp

Filesize
512KB

Download