chaos | 9655de02d2274819418054aa58e22e88b2b649a5d2da076e9e53ce425048ea45

Analysis

max time kernel
122s
max time network
132s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
06-03-2024 05:23

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General

Target

9655de02d2274819418054aa58e22e88b2b649a5d2da076e9e53ce425048ea45.exe
Size

26KB
MD5

ad78e9e6e100891aa25b07097029842a
SHA1

d979d4fc1bfb8b54699423a5a35d1064426b4f1c
SHA256

9655de02d2274819418054aa58e22e88b2b649a5d2da076e9e53ce425048ea45
SHA512

3796a39cee380b76c9e034237bd929232df26bc77154aff7d7049301fb452c991bab555362af4c67540bc6d5b0bbf6e96eea2bb4c9d3b285791ae795ef6059c6
SSDEEP

384:r3Mg/bqo2jiDpMkms1mIJDr91CrLGezan:Nqo2eDpMkms1mADr9UiezU

Score

10^/10

chaos evasion 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/2616-0-0x0000000000110000-0x000000000011C000-memory.dmp	family_chaos
behavioral1/files/0x0008000000012265-5.dat	family_chaos
behavioral1/memory/2932-7-0x0000000000C70000-0x0000000000C7C000-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 3 IoCs

resource	yara_rule
behavioral1/memory/2616-0-0x0000000000110000-0x000000000011C000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware
behavioral1/files/0x0008000000012265-5.dat	INDICATOR_SUSPICIOUS_GENRansomware
behavioral1/memory/2932-7-0x0000000000C70000-0x0000000000C7C000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware

Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs

ransomware evasion

Inhibit System Recovery

T1490

pid	Process
1792	bcdedit.exe
1888	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
940	wbadmin.exe

Drops startup file 3 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\read_it.txt	svchost.exe
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

Executes dropped EXE 1 IoCs

pid	Process
2932	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\Public\Documents\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\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\Libraries\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\Admin\Links\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Favorites\Links\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Videos\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\Favorites\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\Public\Music\Sample Music\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Saved Games\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\Public\Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Music\desktop.ini	svchost.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-2461186416-2307104501-1787948496-1000\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Downloads\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\Windows\Start Menu\Programs\Maintenance\Desktop.ini	svchost.exe
File opened for modification	C:\Users\Public\Pictures\Sample Pictures\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Contacts\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Pictures\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\Windows\Start Menu\Programs\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\Admin\Documents\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\Recent\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini	svchost.exe
File opened for modification	C:\Users\Admin\Videos\desktop.ini	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
2680	vssadmin.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
2324	NOTEPAD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2932	svchost.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2616	9655de02d2274819418054aa58e22e88b2b649a5d2da076e9e53ce425048ea45.exe
2616	9655de02d2274819418054aa58e22e88b2b649a5d2da076e9e53ce425048ea45.exe
2932	svchost.exe
2932	svchost.exe
2932	svchost.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	2616	9655de02d2274819418054aa58e22e88b2b649a5d2da076e9e53ce425048ea45.exe
Token: SeDebugPrivilege	2932	svchost.exe
Token: SeBackupPrivilege	2668	vssvc.exe
Token: SeRestorePrivilege	2668	vssvc.exe
Token: SeAuditPrivilege	2668	vssvc.exe
Token: SeIncreaseQuotaPrivilege	2952	WMIC.exe
Token: SeSecurityPrivilege	2952	WMIC.exe
Token: SeTakeOwnershipPrivilege	2952	WMIC.exe
Token: SeLoadDriverPrivilege	2952	WMIC.exe
Token: SeSystemProfilePrivilege	2952	WMIC.exe
Token: SeSystemtimePrivilege	2952	WMIC.exe
Token: SeProfSingleProcessPrivilege	2952	WMIC.exe
Token: SeIncBasePriorityPrivilege	2952	WMIC.exe
Token: SeCreatePagefilePrivilege	2952	WMIC.exe
Token: SeBackupPrivilege	2952	WMIC.exe
Token: SeRestorePrivilege	2952	WMIC.exe
Token: SeShutdownPrivilege	2952	WMIC.exe
Token: SeDebugPrivilege	2952	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2952	WMIC.exe
Token: SeRemoteShutdownPrivilege	2952	WMIC.exe
Token: SeUndockPrivilege	2952	WMIC.exe
Token: SeManageVolumePrivilege	2952	WMIC.exe
Token: 33	2952	WMIC.exe
Token: 34	2952	WMIC.exe
Token: 35	2952	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2952	WMIC.exe
Token: SeSecurityPrivilege	2952	WMIC.exe
Token: SeTakeOwnershipPrivilege	2952	WMIC.exe
Token: SeLoadDriverPrivilege	2952	WMIC.exe
Token: SeSystemProfilePrivilege	2952	WMIC.exe
Token: SeSystemtimePrivilege	2952	WMIC.exe
Token: SeProfSingleProcessPrivilege	2952	WMIC.exe
Token: SeIncBasePriorityPrivilege	2952	WMIC.exe
Token: SeCreatePagefilePrivilege	2952	WMIC.exe
Token: SeBackupPrivilege	2952	WMIC.exe
Token: SeRestorePrivilege	2952	WMIC.exe
Token: SeShutdownPrivilege	2952	WMIC.exe
Token: SeDebugPrivilege	2952	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2952	WMIC.exe
Token: SeRemoteShutdownPrivilege	2952	WMIC.exe
Token: SeUndockPrivilege	2952	WMIC.exe
Token: SeManageVolumePrivilege	2952	WMIC.exe
Token: 33	2952	WMIC.exe
Token: 34	2952	WMIC.exe
Token: 35	2952	WMIC.exe
Token: SeBackupPrivilege	684	wbengine.exe
Token: SeRestorePrivilege	684	wbengine.exe
Token: SeSecurityPrivilege	684	wbengine.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2616 wrote to memory of 2932	2616	9655de02d2274819418054aa58e22e88b2b649a5d2da076e9e53ce425048ea45.exe	27
PID 2616 wrote to memory of 2932	2616	9655de02d2274819418054aa58e22e88b2b649a5d2da076e9e53ce425048ea45.exe	27
PID 2616 wrote to memory of 2932	2616	9655de02d2274819418054aa58e22e88b2b649a5d2da076e9e53ce425048ea45.exe	27
PID 2932 wrote to memory of 1668	2932	svchost.exe	31
PID 2932 wrote to memory of 1668	2932	svchost.exe	31
PID 2932 wrote to memory of 1668	2932	svchost.exe	31
PID 1668 wrote to memory of 2680	1668	cmd.exe	33
PID 1668 wrote to memory of 2680	1668	cmd.exe	33
PID 1668 wrote to memory of 2680	1668	cmd.exe	33
PID 1668 wrote to memory of 2952	1668	cmd.exe	37
PID 1668 wrote to memory of 2952	1668	cmd.exe	37
PID 1668 wrote to memory of 2952	1668	cmd.exe	37
PID 2932 wrote to memory of 1916	2932	svchost.exe	39
PID 2932 wrote to memory of 1916	2932	svchost.exe	39
PID 2932 wrote to memory of 1916	2932	svchost.exe	39
PID 1916 wrote to memory of 1792	1916	cmd.exe	41
PID 1916 wrote to memory of 1792	1916	cmd.exe	41
PID 1916 wrote to memory of 1792	1916	cmd.exe	41
PID 1916 wrote to memory of 1888	1916	cmd.exe	42
PID 1916 wrote to memory of 1888	1916	cmd.exe	42
PID 1916 wrote to memory of 1888	1916	cmd.exe	42
PID 2932 wrote to memory of 1364	2932	svchost.exe	43
PID 2932 wrote to memory of 1364	2932	svchost.exe	43
PID 2932 wrote to memory of 1364	2932	svchost.exe	43
PID 1364 wrote to memory of 940	1364	cmd.exe	45
PID 1364 wrote to memory of 940	1364	cmd.exe	45
PID 1364 wrote to memory of 940	1364	cmd.exe	45
PID 2932 wrote to memory of 2324	2932	svchost.exe	49
PID 2932 wrote to memory of 2324	2932	svchost.exe	49
PID 2932 wrote to memory of 2324	2932	svchost.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\9655de02d2274819418054aa58e22e88b2b649a5d2da076e9e53ce425048ea45.exe
"C:\Users\Admin\AppData\Local\Temp\9655de02d2274819418054aa58e22e88b2b649a5d2da076e9e53ce425048ea45.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2616
- 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)
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2932
- - 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:1668
  - - C:\Windows\system32\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:2680
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:2952
- - 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:1916
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} bootstatuspolicy ignoreallfailures
      4⤵
      Modifies boot configuration data using bcdedit
      PID:1792
  - - C:\Windows\system32\bcdedit.exe
      bcdedit /set {default} recoveryenabled no
      4⤵
      Modifies boot configuration data using bcdedit
      PID:1888
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1364
  - - C:\Windows\system32\wbadmin.exe
      wbadmin delete catalog -quiet
      4⤵
      Deletes backup catalog
      PID:940
- - 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:2324

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2668

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:684

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:2908

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:2088

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

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

Inhibit System Recovery

T1490

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\svchost.exe

Filesize
26KB

MD5
ad78e9e6e100891aa25b07097029842a

SHA1
d979d4fc1bfb8b54699423a5a35d1064426b4f1c

SHA256
9655de02d2274819418054aa58e22e88b2b649a5d2da076e9e53ce425048ea45

SHA512
3796a39cee380b76c9e034237bd929232df26bc77154aff7d7049301fb452c991bab555362af4c67540bc6d5b0bbf6e96eea2bb4c9d3b285791ae795ef6059c6

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

Filesize
33B

MD5
7e471568db4920adde170dca1b37b782

SHA1
64405354fcaafd0022ce03993a9349c959f4c000

SHA256
fe2a4beae8ee29602f911552f296e0ac25e4e3aecd90c841d2c3afe81e8af63a

SHA512
0dd445cf1668e2c0bb55a75290f007b5dec85913e2785c31f590c42d006a13664a8698e8d4d117c853ce29e52bf73252fb00bf6b3f7ce6e04d13d7dbea63f680

Download Submit
memory/2616-0-0x0000000000110000-0x000000000011C000-memory.dmp

Filesize
48KB

Download
memory/2616-1-0x000007FEF58F0000-0x000007FEF62DC000-memory.dmp

Filesize
9.9MB

Download
memory/2616-8-0x000007FEF58F0000-0x000007FEF62DC000-memory.dmp

Filesize
9.9MB

Download
memory/2932-7-0x0000000000C70000-0x0000000000C7C000-memory.dmp

Filesize
48KB

Download
memory/2932-9-0x000007FEF58F0000-0x000007FEF62DC000-memory.dmp

Filesize
9.9MB

Download
memory/2932-11-0x000000001ABF0000-0x000000001AC70000-memory.dmp

Filesize
512KB

Download
memory/2932-470-0x000007FEF58F0000-0x000007FEF62DC000-memory.dmp

Filesize
9.9MB

Download
memory/2932-471-0x000000001ABF0000-0x000000001AC70000-memory.dmp

Filesize
512KB

Download