chaos | f8c0182bb665ec50b41f28e1cb5e6976a06ef2fa5a44ea2ff3a5dbe433d3e003

Analysis

max time kernel
122s
max time network
123s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
04-05-2024 17:24

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General

Target

2024-05-04_020c5307d570d76472c4bb2c757b7a3b_destroyer_wannacry.exe
Size

83KB
MD5

020c5307d570d76472c4bb2c757b7a3b
SHA1

7f84117a45516469715fe2a467e0edc70e8ae13a
SHA256

f8c0182bb665ec50b41f28e1cb5e6976a06ef2fa5a44ea2ff3a5dbe433d3e003
SHA512

3045b2c373212e2f6cbb0902242530fc12de9e8e6cc0d407465a1a6ea93d9d80cf4c0527dc6b82850f318fa567a13aecc6d6e98c991cf429d455c6348ce8f8e9
SSDEEP

1536:c3kIw9w9r9S3ok16/1X0Sfq2TLiqq9Xs20TIbhm3NY/fU+Ht+CvWQ90:c3k1w9r9S4k6dTSsXcbhm3NYkSt+Cvra

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/2092-1-0x0000000001320000-0x000000000133C000-memory.dmp	family_chaos
behavioral1/files/0x000d000000012336-5.dat	family_chaos
behavioral1/memory/2968-7-0x00000000008F0000-0x000000000090C000-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

Detects command variations typically used by ransomware 3 IoCs

resource	yara_rule
behavioral1/memory/2092-1-0x0000000001320000-0x000000000133C000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware
behavioral1/files/0x000d000000012336-5.dat	INDICATOR_SUSPICIOUS_GENRansomware
behavioral1/memory/2968-7-0x00000000008F0000-0x000000000090C000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware

Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs

ransomware evasion

Inhibit System Recovery

T1490

pid	Process
1692	bcdedit.exe
2252	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
2084	wbadmin.exe

Drops startup file 3 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
2968	svchost.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\Admin\Favorites\Links\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Searches\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Contacts\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-2721934792-624042501-2768869379-1000\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\Sample Videos\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Saved Games\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Music\Sample Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\Links for United States\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Downloads\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Videos\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\Sample Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Links\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini	svchost.exe

Sets desktop wallpaper using registry 2 TTPs 2 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\4k65db5hu.jpg"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\Pictures\\My Wallpaper.jpg"	svchost.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
2036	vssadmin.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
1576	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2968	svchost.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2092	2024-05-04_020c5307d570d76472c4bb2c757b7a3b_destroyer_wannacry.exe
2092	2024-05-04_020c5307d570d76472c4bb2c757b7a3b_destroyer_wannacry.exe
2968	svchost.exe
2968	svchost.exe
2968	svchost.exe
2968	svchost.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	2092	2024-05-04_020c5307d570d76472c4bb2c757b7a3b_destroyer_wannacry.exe
Token: SeDebugPrivilege	2968	svchost.exe
Token: SeBackupPrivilege	2468	vssvc.exe
Token: SeRestorePrivilege	2468	vssvc.exe
Token: SeAuditPrivilege	2468	vssvc.exe
Token: SeIncreaseQuotaPrivilege	1436	WMIC.exe
Token: SeSecurityPrivilege	1436	WMIC.exe
Token: SeTakeOwnershipPrivilege	1436	WMIC.exe
Token: SeLoadDriverPrivilege	1436	WMIC.exe
Token: SeSystemProfilePrivilege	1436	WMIC.exe
Token: SeSystemtimePrivilege	1436	WMIC.exe
Token: SeProfSingleProcessPrivilege	1436	WMIC.exe
Token: SeIncBasePriorityPrivilege	1436	WMIC.exe
Token: SeCreatePagefilePrivilege	1436	WMIC.exe
Token: SeBackupPrivilege	1436	WMIC.exe
Token: SeRestorePrivilege	1436	WMIC.exe
Token: SeShutdownPrivilege	1436	WMIC.exe
Token: SeDebugPrivilege	1436	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1436	WMIC.exe
Token: SeRemoteShutdownPrivilege	1436	WMIC.exe
Token: SeUndockPrivilege	1436	WMIC.exe
Token: SeManageVolumePrivilege	1436	WMIC.exe
Token: 33	1436	WMIC.exe
Token: 34	1436	WMIC.exe
Token: 35	1436	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1436	WMIC.exe
Token: SeSecurityPrivilege	1436	WMIC.exe
Token: SeTakeOwnershipPrivilege	1436	WMIC.exe
Token: SeLoadDriverPrivilege	1436	WMIC.exe
Token: SeSystemProfilePrivilege	1436	WMIC.exe
Token: SeSystemtimePrivilege	1436	WMIC.exe
Token: SeProfSingleProcessPrivilege	1436	WMIC.exe
Token: SeIncBasePriorityPrivilege	1436	WMIC.exe
Token: SeCreatePagefilePrivilege	1436	WMIC.exe
Token: SeBackupPrivilege	1436	WMIC.exe
Token: SeRestorePrivilege	1436	WMIC.exe
Token: SeShutdownPrivilege	1436	WMIC.exe
Token: SeDebugPrivilege	1436	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1436	WMIC.exe
Token: SeRemoteShutdownPrivilege	1436	WMIC.exe
Token: SeUndockPrivilege	1436	WMIC.exe
Token: SeManageVolumePrivilege	1436	WMIC.exe
Token: 33	1436	WMIC.exe
Token: 34	1436	WMIC.exe
Token: 35	1436	WMIC.exe
Token: SeBackupPrivilege	2384	wbengine.exe
Token: SeRestorePrivilege	2384	wbengine.exe
Token: SeSecurityPrivilege	2384	wbengine.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2092 wrote to memory of 2968	2092	2024-05-04_020c5307d570d76472c4bb2c757b7a3b_destroyer_wannacry.exe	28
PID 2092 wrote to memory of 2968	2092	2024-05-04_020c5307d570d76472c4bb2c757b7a3b_destroyer_wannacry.exe	28
PID 2092 wrote to memory of 2968	2092	2024-05-04_020c5307d570d76472c4bb2c757b7a3b_destroyer_wannacry.exe	28
PID 2968 wrote to memory of 2944	2968	svchost.exe	29
PID 2968 wrote to memory of 2944	2968	svchost.exe	29
PID 2968 wrote to memory of 2944	2968	svchost.exe	29
PID 2944 wrote to memory of 2036	2944	cmd.exe	31
PID 2944 wrote to memory of 2036	2944	cmd.exe	31
PID 2944 wrote to memory of 2036	2944	cmd.exe	31
PID 2944 wrote to memory of 1436	2944	cmd.exe	35
PID 2944 wrote to memory of 1436	2944	cmd.exe	35
PID 2944 wrote to memory of 1436	2944	cmd.exe	35
PID 2968 wrote to memory of 1364	2968	svchost.exe	37
PID 2968 wrote to memory of 1364	2968	svchost.exe	37
PID 2968 wrote to memory of 1364	2968	svchost.exe	37
PID 1364 wrote to memory of 1692	1364	cmd.exe	39
PID 1364 wrote to memory of 1692	1364	cmd.exe	39
PID 1364 wrote to memory of 1692	1364	cmd.exe	39
PID 1364 wrote to memory of 2252	1364	cmd.exe	40
PID 1364 wrote to memory of 2252	1364	cmd.exe	40
PID 1364 wrote to memory of 2252	1364	cmd.exe	40
PID 2968 wrote to memory of 2028	2968	svchost.exe	41
PID 2968 wrote to memory of 2028	2968	svchost.exe	41
PID 2968 wrote to memory of 2028	2968	svchost.exe	41
PID 2028 wrote to memory of 2084	2028	cmd.exe	43
PID 2028 wrote to memory of 2084	2028	cmd.exe	43
PID 2028 wrote to memory of 2084	2028	cmd.exe	43
PID 2968 wrote to memory of 1576	2968	svchost.exe	47
PID 2968 wrote to memory of 1576	2968	svchost.exe	47
PID 2968 wrote to memory of 1576	2968	svchost.exe	47

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\2024-05-04_020c5307d570d76472c4bb2c757b7a3b_destroyer_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-04_020c5307d570d76472c4bb2c757b7a3b_destroyer_wannacry.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2092
- C:\Users\Admin\AppData\Roaming\svchost.exe
  "C:\Users\Admin\AppData\Roaming\svchost.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:2968
- - 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:2944
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:2036
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:1436
- - 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:1364
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:1692
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:2252
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2028
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:2084
- - C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\read_it_dumbass.txt
    3⤵
    - Opens file in notepad (likely ransom note)
    PID:1576

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2468

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2384

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:2088

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:692

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

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\svchost.exe

Filesize
83KB

MD5
020c5307d570d76472c4bb2c757b7a3b

SHA1
7f84117a45516469715fe2a467e0edc70e8ae13a

SHA256
f8c0182bb665ec50b41f28e1cb5e6976a06ef2fa5a44ea2ff3a5dbe433d3e003

SHA512
3045b2c373212e2f6cbb0902242530fc12de9e8e6cc0d407465a1a6ea93d9d80cf4c0527dc6b82850f318fa567a13aecc6d6e98c991cf429d455c6348ce8f8e9

Download Submit
C:\Users\Admin\Desktop\read_it_dumbass.txt

Filesize
29KB

MD5
5afac9fd9e8225c0cf66ecda331a8596

SHA1
1be00cd9d62a3627fb70da5dc401451a26c814fa

SHA256
83fc418d6a64be1c314e08177ef8d17fc3a174522c5db758e1e67f452e520378

SHA512
e5c0de9148ca2176ef76c279e0858473fb4f6e84cfb5e75d44190696fa4d776573e12de5d4656dff1a21819ebb3355a8d1e70806dcdbd0c175c06605d4a44e5d

Download Submit
memory/2092-0-0x000007FEF57F3000-0x000007FEF57F4000-memory.dmp

Filesize
4KB

Download
memory/2092-1-0x0000000001320000-0x000000000133C000-memory.dmp

Filesize
112KB

Download
memory/2968-7-0x00000000008F0000-0x000000000090C000-memory.dmp

Filesize
112KB

Download
memory/2968-29-0x000007FEF57F0000-0x000007FEF61DC000-memory.dmp

Filesize
9.9MB

Download
memory/2968-72-0x000007FEF57F0000-0x000007FEF61DC000-memory.dmp

Filesize
9.9MB

Download
memory/2968-73-0x000007FEF57F0000-0x000007FEF61DC000-memory.dmp

Filesize
9.9MB

Download
memory/2968-74-0x000007FEF57F0000-0x000007FEF61DC000-memory.dmp

Filesize
9.9MB

Download