4fc4ae98d231e2bf0b8d4ad5463d9d4f673c1d5d63dc98838cf14a61d64ce6e6

Analysis

max time kernel
30s
max time network
33s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
22-03-2023 01:10

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General

Target

XWormContent.exe
Size

10KB
MD5

7d4e7449b76c34210100ea88c163c7fb
SHA1

ef679b47eb42f162355e8772ceb25712dc7ec75e
SHA256

4fc4ae98d231e2bf0b8d4ad5463d9d4f673c1d5d63dc98838cf14a61d64ce6e6
SHA512

d0ef46b3e5622160e9f6ce5cac8f2b14a10bad8e2c1f91a7e1d9713fd6ed844cf74817ca050e1a2d95ee9cd24ec01c67b6e279acddc95449553effbb8354ec1e
SSDEEP

192:qLH2ANdaLix1upSiP/VunlYJLLLTuzTVQLFjb5cqfM:qLH2ydaLiO3hPLTucTf

Score

6^/10

persistence

Malware Config

Signatures

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

reg.exereg.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\AVAADA = "C:\\Windows\\XWormContent.exe"	reg.exe
Key created	\REGISTRY\USER\S-1-5-21-1914912747-3343861975-731272777-1000\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1914912747-3343861975-731272777-1000\Software\Microsoft\Windows\CurrentVersion\Run\AVAADA = "C:\\Windows\\XWormContent.exe"	reg.exe

Drops file in Windows directory 6 IoCs

Processes:

cmd.exe

description	ioc	process
File created	C:\Windows\XWormContent.exe	cmd.exe
File opened for modification	C:\Windows\XWormContent.exe	cmd.exe
File created	C:\Windows\MicrosoftTeams.exe	cmd.exe
File opened for modification	C:\Windows\MicrosoftTeams.exe	cmd.exe
File opened for modification	C:\Windows\win.ini	cmd.exe
File opened for modification	C:\Windows\system.ini	cmd.exe

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

System Information Discovery
T1082
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

1712 timeout.exe
Modifies registry key 1 TTPs 2 IoCs

Modify Registry
T1112

Processes:

reg.exereg.exe

pid process

268 reg.exe
580 reg.exe

pid	process
1712	timeout.exe

pid	process
268	reg.exe
580	reg.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

XWormContent.execmd.exe

description	pid	process	target process
PID 884 wrote to memory of 1044	884	XWormContent.exe	cmd.exe
PID 884 wrote to memory of 1044	884	XWormContent.exe	cmd.exe
PID 884 wrote to memory of 1044	884	XWormContent.exe	cmd.exe
PID 1044 wrote to memory of 1712	1044	cmd.exe	timeout.exe
PID 1044 wrote to memory of 1712	1044	cmd.exe	timeout.exe
PID 1044 wrote to memory of 1712	1044	cmd.exe	timeout.exe
PID 1044 wrote to memory of 580	1044	cmd.exe	reg.exe
PID 1044 wrote to memory of 580	1044	cmd.exe	reg.exe
PID 1044 wrote to memory of 580	1044	cmd.exe	reg.exe
PID 1044 wrote to memory of 268	1044	cmd.exe	reg.exe
PID 1044 wrote to memory of 268	1044	cmd.exe	reg.exe
PID 1044 wrote to memory of 268	1044	cmd.exe	reg.exe

C:\Users\Admin\AppData\Local\Temp\XWormContent.exe
"C:\Users\Admin\AppData\Local\Temp\XWormContent.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:884
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\cmd.bat" "
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:1044
- - C:\Windows\system32\timeout.exe
    timeout -t 3
    3⤵
    - Delays execution with timeout.exe
    PID:1712
- - C:\Windows\system32\reg.exe
    reg add HKLM\Software\Microsoft\Windows\CurrentVersion\Run /v AVAADA /t REG_SZ /d C:\Windows\XWormContent.exe /f
    3⤵
    - Adds Run key to start application
    - Modifies registry key
    PID:580
- - C:\Windows\system32\reg.exe
    reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v AVAADA /t REG_SZ /d C:\Windows\XWormContent.exe /f
    3⤵
    - Adds Run key to start application
    - Modifies registry key
    PID:268

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\cmd.bat

Filesize
1KB

MD5
9ed2e107d38ab102bfe7614cfd24e829

SHA1
9541263008adf001fa4c3a0236f627223380d509

SHA256
b7583f69e19e71f24a2820d9decb63402084072889114ccab8fc98b3d16bc598

SHA512
31ab6308ba8840d2bc8667f45cec80090f595501df7851beba8584ed4556e505ddd3550cc83cdaeac38f6889904814ea155a7f779552e1c53a20885a0aefb6d2

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C:\Users\Admin\AppData\Local\Temp\cmd.bat

Filesize
1KB

MD5
9ed2e107d38ab102bfe7614cfd24e829

SHA1
9541263008adf001fa4c3a0236f627223380d509

SHA256
b7583f69e19e71f24a2820d9decb63402084072889114ccab8fc98b3d16bc598

SHA512
31ab6308ba8840d2bc8667f45cec80090f595501df7851beba8584ed4556e505ddd3550cc83cdaeac38f6889904814ea155a7f779552e1c53a20885a0aefb6d2

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memory/884-54-0x0000000000CD0000-0x0000000000CD8000-memory.dmp

Filesize
32KB

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