d816fbf9bf26b466bc69a0cb1624c82bae397fe6f8ce6f388a330f70fe2d8150

Analysis

max time kernel
146s
max time network
162s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
14/03/2024, 16:53

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General

Target

c921a19a803a3eb62ff67ecd9f5d238b.exe
Size

24KB
MD5

c921a19a803a3eb62ff67ecd9f5d238b
SHA1

8e48e538abf42a23ccb23714cf59593c41bbaaae
SHA256

d816fbf9bf26b466bc69a0cb1624c82bae397fe6f8ce6f388a330f70fe2d8150
SHA512

ce4b39da393c141e8fe890fd9c40f36c232684ee7000f106178e784ec04c382998e7fed76278a43f35d3fcb4fa679487b90ff4986cac188305c1bf7b40d6344f
SSDEEP

384:E3eVES+/xwGkRKJilM61qmTTMVF9/q5N0:bGS+ZfbJiO8qYoAi

Score

6^/10

persistence

Malware Config

Signatures

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Start GeekBuddy = "C:\\Program Files\\Common Files\\Microsoft Shared\\Web Folders\\1033\\spoolsv.exe"	c921a19a803a3eb62ff67ecd9f5d238b.exe

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\Microsoft Shared\Web Folders\1033\spoolsv.exe	c921a19a803a3eb62ff67ecd9f5d238b.exe

Enumerates processes with tasklist 1 TTPs 1 IoCs

Process Discovery

T1057

pid	Process
960	tasklist.exe

Gathers network information 2 TTPs 2 IoCs

Uses commandline utility to view network configuration.

System Information Discovery

T1082

Command and Scripting Interpreter

T1059

pid	Process
908	ipconfig.exe
840	NETSTAT.EXE

Runs net.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	960	tasklist.exe
Token: SeDebugPrivilege	840	NETSTAT.EXE

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4644	c921a19a803a3eb62ff67ecd9f5d238b.exe
4644	c921a19a803a3eb62ff67ecd9f5d238b.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 4644 wrote to memory of 1280	4644	c921a19a803a3eb62ff67ecd9f5d238b.exe	87
PID 4644 wrote to memory of 1280	4644	c921a19a803a3eb62ff67ecd9f5d238b.exe	87
PID 4644 wrote to memory of 1280	4644	c921a19a803a3eb62ff67ecd9f5d238b.exe	87
PID 1280 wrote to memory of 4364	1280	cmd.exe	89
PID 1280 wrote to memory of 4364	1280	cmd.exe	89
PID 1280 wrote to memory of 4364	1280	cmd.exe	89
PID 1280 wrote to memory of 908	1280	cmd.exe	90
PID 1280 wrote to memory of 908	1280	cmd.exe	90
PID 1280 wrote to memory of 908	1280	cmd.exe	90
PID 1280 wrote to memory of 960	1280	cmd.exe	91
PID 1280 wrote to memory of 960	1280	cmd.exe	91
PID 1280 wrote to memory of 960	1280	cmd.exe	91
PID 1280 wrote to memory of 1116	1280	cmd.exe	95
PID 1280 wrote to memory of 1116	1280	cmd.exe	95
PID 1280 wrote to memory of 1116	1280	cmd.exe	95
PID 1116 wrote to memory of 4668	1116	net.exe	96
PID 1116 wrote to memory of 4668	1116	net.exe	96
PID 1116 wrote to memory of 4668	1116	net.exe	96
PID 1280 wrote to memory of 840	1280	cmd.exe	97
PID 1280 wrote to memory of 840	1280	cmd.exe	97
PID 1280 wrote to memory of 840	1280	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\c921a19a803a3eb62ff67ecd9f5d238b.exe
"C:\Users\Admin\AppData\Local\Temp\c921a19a803a3eb62ff67ecd9f5d238b.exe"
1⤵
- Adds Run key to start application
- Drops file in Program Files directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4644
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ver >c:\windows\temp\flash.log & cmd /c set >>c:\windows\temp\flash.log & ipconfig /all >>c:\windows\temp\flash.log & tasklist >>c:\windows\temp\flash.log & net start>>c:\windows\temp\flash.log & netstat -an >>c:\windows\temp\flash.log
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1280
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c set
    3⤵
    PID:4364
- - C:\Windows\SysWOW64\ipconfig.exe
    ipconfig /all
    3⤵
    - Gathers network information
    PID:908
- - C:\Windows\SysWOW64\tasklist.exe
    tasklist
    3⤵
    - Enumerates processes with tasklist
    - Suspicious use of AdjustPrivilegeToken
    PID:960
- - C:\Windows\SysWOW64\net.exe
    net start
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1116
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 start
      4⤵
      PID:4668
- - C:\Windows\SysWOW64\NETSTAT.EXE
    netstat -an
    3⤵
    - Gathers network information
    - Suspicious use of AdjustPrivilegeToken
    PID:840

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Process Discovery

T1057

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\??\c:\windows\temp\flash.log

Filesize
14KB

MD5
b1a67ef03eb778768408a7b825338b1f

SHA1
7d1ae8f0d76106cf6db74627edc930bee2502dea

SHA256
05e8e04205d685287dd8e6141ba6c2c2f88fbc00c1533ae7f76fd1e573b52d46

SHA512
9e38869ff4f8f9fdd6b64d84e1a1f929fa26bddcfe611e8d8800d87c1382cf46cf5298cbd374e3d5f6bb4f7a57b9e8fd48ef1e7d019c30ca81e86737f5c9e9a1

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads