7153ce847b0d4281ef80a3d928c064cf013f04da0ea0bdaa7ad928ecafeeb607

Analysis

max time kernel
9s
max time network
125s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
25/12/2023, 02:40

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General

Target

00871ea218f1cdf8cfaf0e8d2fa3901f.exe
Size

77KB
MD5

00871ea218f1cdf8cfaf0e8d2fa3901f
SHA1

b18c7f0a2ac614345f8fc7e347e31e8fba6e9a36
SHA256

7153ce847b0d4281ef80a3d928c064cf013f04da0ea0bdaa7ad928ecafeeb607
SHA512

918e6cd6acd5b1c4c330898d7e9aae3e60c0eb44a0b6ab0333885a1f246e7e7f96ed856e132dfa1452654a34632e4536781a5afd89dca04cf3e9e7c8b0821984
SSDEEP

1536:OZz8vN5bAG2Pooyv3pUjuXw5ANKZKHtjjZ:Ez8F5MG2PS/uj15ANOyp

Score

10^/10

persistence upx

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\userinit = "C:\\Windows\\system32\\twext.exe,"	00871ea218f1cdf8cfaf0e8d2fa3901f.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/396-0-0x0000000000400000-0x0000000000408000-memory.dmp	upx
behavioral2/memory/396-6-0x0000000000400000-0x0000000000408000-memory.dmp	upx

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\twext.exe	00871ea218f1cdf8cfaf0e8d2fa3901f.exe
File created	C:\Windows\SysWOW64\twext.exe	00871ea218f1cdf8cfaf0e8d2fa3901f.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 396 set thread context of 2400	396	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	32

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe
2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe
2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe
2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
396	00871ea218f1cdf8cfaf0e8d2fa3901f.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 396 wrote to memory of 2400	396	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	32
PID 396 wrote to memory of 2400	396	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	32
PID 396 wrote to memory of 2400	396	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	32
PID 396 wrote to memory of 2400	396	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	32
PID 396 wrote to memory of 2400	396	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	32
PID 396 wrote to memory of 2400	396	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	32
PID 396 wrote to memory of 2400	396	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	32
PID 396 wrote to memory of 2400	396	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	32
PID 396 wrote to memory of 2400	396	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	32
PID 2400 wrote to memory of 616	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	89
PID 2400 wrote to memory of 616	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	89
PID 2400 wrote to memory of 616	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	89
PID 2400 wrote to memory of 616	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	89
PID 2400 wrote to memory of 616	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	89
PID 2400 wrote to memory of 616	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	89
PID 2400 wrote to memory of 616	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	89
PID 2400 wrote to memory of 616	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	89
PID 2400 wrote to memory of 616	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	89
PID 2400 wrote to memory of 616	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	89
PID 2400 wrote to memory of 616	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	89
PID 2400 wrote to memory of 616	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	89
PID 2400 wrote to memory of 616	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	89
PID 2400 wrote to memory of 616	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	89
PID 2400 wrote to memory of 616	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	89
PID 2400 wrote to memory of 616	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	89
PID 2400 wrote to memory of 616	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	89
PID 2400 wrote to memory of 616	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	89
PID 2400 wrote to memory of 616	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	89
PID 2400 wrote to memory of 616	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	89
PID 2400 wrote to memory of 616	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	89
PID 2400 wrote to memory of 616	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	89
PID 2400 wrote to memory of 616	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	89
PID 2400 wrote to memory of 616	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	89
PID 2400 wrote to memory of 616	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	89
PID 2400 wrote to memory of 616	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	89
PID 2400 wrote to memory of 616	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	89
PID 2400 wrote to memory of 616	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	89
PID 2400 wrote to memory of 616	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	89
PID 2400 wrote to memory of 616	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	89
PID 2400 wrote to memory of 616	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	89
PID 2400 wrote to memory of 616	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	89
PID 2400 wrote to memory of 616	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	89
PID 2400 wrote to memory of 616	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	89
PID 2400 wrote to memory of 616	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	89
PID 2400 wrote to memory of 616	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	89
PID 2400 wrote to memory of 616	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	89
PID 2400 wrote to memory of 616	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	89
PID 2400 wrote to memory of 616	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	89
PID 2400 wrote to memory of 616	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	89
PID 2400 wrote to memory of 616	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	89
PID 2400 wrote to memory of 616	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	89
PID 2400 wrote to memory of 616	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	89
PID 2400 wrote to memory of 616	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	89
PID 2400 wrote to memory of 616	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	89
PID 2400 wrote to memory of 616	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	89
PID 2400 wrote to memory of 616	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	89
PID 2400 wrote to memory of 616	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	89
PID 2400 wrote to memory of 616	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	89
PID 2400 wrote to memory of 616	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	89
PID 2400 wrote to memory of 616	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	89
PID 2400 wrote to memory of 616	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	89
PID 2400 wrote to memory of 616	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	89
PID 2400 wrote to memory of 616	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	89
PID 2400 wrote to memory of 616	2400	00871ea218f1cdf8cfaf0e8d2fa3901f.exe	89

C:\Users\Admin\AppData\Local\Temp\00871ea218f1cdf8cfaf0e8d2fa3901f.exe
"C:\Users\Admin\AppData\Local\Temp\00871ea218f1cdf8cfaf0e8d2fa3901f.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:396
- C:\Users\Admin\AppData\Local\Temp\00871ea218f1cdf8cfaf0e8d2fa3901f.exe
  "C:\Users\Admin\AppData\Local\Temp\00871ea218f1cdf8cfaf0e8d2fa3901f.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Drops file in System32 directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2400

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:616

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/396-0-0x0000000000400000-0x0000000000408000-memory.dmp

Filesize
32KB

Download
memory/396-6-0x0000000000400000-0x0000000000408000-memory.dmp

Filesize
32KB

Download
memory/616-26-0x0000000026C00000-0x0000000026C26000-memory.dmp

Filesize
152KB

Download
memory/616-31-0x0000000026C30000-0x0000000026C56000-memory.dmp

Filesize
152KB

Download
memory/616-41-0x0000000026C90000-0x0000000026CB6000-memory.dmp

Filesize
152KB

Download
memory/616-46-0x0000000026CC0000-0x0000000026CE6000-memory.dmp

Filesize
152KB

Download
memory/616-56-0x0000000026D20000-0x0000000026D46000-memory.dmp

Filesize
152KB

Download
memory/616-61-0x0000000026D50000-0x0000000026D76000-memory.dmp

Filesize
152KB

Download
memory/616-71-0x0000000026DB0000-0x0000000026DD6000-memory.dmp

Filesize
152KB

Download
memory/616-76-0x0000000026DE0000-0x0000000026E06000-memory.dmp

Filesize
152KB

Download
memory/616-81-0x0000000026E10000-0x0000000026E36000-memory.dmp

Filesize
152KB

Download
memory/616-91-0x0000000026E70000-0x0000000026E96000-memory.dmp

Filesize
152KB

Download
memory/616-96-0x0000000026EA0000-0x0000000026EC6000-memory.dmp

Filesize
152KB

Download
memory/616-106-0x0000000026F00000-0x0000000026F26000-memory.dmp

Filesize
152KB

Download
memory/616-111-0x0000000026F30000-0x0000000026F56000-memory.dmp

Filesize
152KB

Download
memory/616-101-0x0000000026ED0000-0x0000000026EF6000-memory.dmp

Filesize
152KB

Download
memory/616-121-0x0000000026F90000-0x0000000026FB6000-memory.dmp

Filesize
152KB

Download
memory/616-126-0x0000000026FC0000-0x0000000026FE6000-memory.dmp

Filesize
152KB

Download
memory/616-136-0x0000000027020000-0x0000000027046000-memory.dmp

Filesize
152KB

Download
memory/616-141-0x0000000027050000-0x0000000027076000-memory.dmp

Filesize
152KB

Download
memory/616-151-0x00000000270B0000-0x00000000270D6000-memory.dmp

Filesize
152KB

Download
memory/616-156-0x00000000270E0000-0x0000000027106000-memory.dmp

Filesize
152KB

Download
memory/616-166-0x0000000027140000-0x0000000027166000-memory.dmp

Filesize
152KB

Download
memory/616-171-0x0000000027170000-0x0000000027196000-memory.dmp

Filesize
152KB

Download
memory/616-181-0x00000000271D0000-0x00000000271F6000-memory.dmp

Filesize
152KB

Download
memory/616-186-0x0000000027200000-0x0000000027226000-memory.dmp

Filesize
152KB

Download
memory/616-191-0x0000000027230000-0x0000000027256000-memory.dmp

Filesize
152KB

Download
memory/616-201-0x0000000027290000-0x00000000272B6000-memory.dmp

Filesize
152KB

Download
memory/616-206-0x00000000272C0000-0x00000000272E6000-memory.dmp

Filesize
152KB

Download
memory/616-216-0x0000000027320000-0x0000000027346000-memory.dmp

Filesize
152KB

Download
memory/616-221-0x0000000027350000-0x0000000027376000-memory.dmp

Filesize
152KB

Download
memory/616-226-0x0000000027380000-0x00000000273A6000-memory.dmp

Filesize
152KB

Download
memory/616-236-0x00000000273E0000-0x0000000027406000-memory.dmp

Filesize
152KB

Download
memory/616-241-0x0000000027410000-0x0000000027436000-memory.dmp

Filesize
152KB

Download
memory/616-251-0x0000000027470000-0x0000000027496000-memory.dmp

Filesize
152KB

Download
memory/616-256-0x00000000274A0000-0x00000000274C6000-memory.dmp

Filesize
152KB

Download
memory/616-261-0x00000000274D0000-0x00000000274F6000-memory.dmp

Filesize
152KB

Download
memory/616-271-0x0000000027530000-0x0000000027556000-memory.dmp

Filesize
152KB

Download
memory/616-276-0x0000000027560000-0x0000000027586000-memory.dmp

Filesize
152KB

Download
memory/616-286-0x00000000275C0000-0x00000000275E6000-memory.dmp

Filesize
152KB

Download
memory/616-291-0x00000000275F0000-0x0000000027616000-memory.dmp

Filesize
152KB

Download
memory/616-301-0x0000000027650000-0x0000000027676000-memory.dmp

Filesize
152KB

Download
memory/616-296-0x0000000027620000-0x0000000027646000-memory.dmp

Filesize
152KB

Download
memory/616-281-0x0000000027590000-0x00000000275B6000-memory.dmp

Filesize
152KB

Download
memory/616-266-0x0000000027500000-0x0000000027526000-memory.dmp

Filesize
152KB

Download
memory/616-246-0x0000000027440000-0x0000000027466000-memory.dmp

Filesize
152KB

Download
memory/616-231-0x00000000273B0000-0x00000000273D6000-memory.dmp

Filesize
152KB

Download
memory/616-211-0x00000000272F0000-0x0000000027316000-memory.dmp

Filesize
152KB

Download
memory/616-196-0x0000000027260000-0x0000000027286000-memory.dmp

Filesize
152KB

Download
memory/616-176-0x00000000271A0000-0x00000000271C6000-memory.dmp

Filesize
152KB

Download
memory/616-161-0x0000000027110000-0x0000000027136000-memory.dmp

Filesize
152KB

Download
memory/616-146-0x0000000027080000-0x00000000270A6000-memory.dmp

Filesize
152KB

Download
memory/616-131-0x0000000026FF0000-0x0000000027016000-memory.dmp

Filesize
152KB

Download
memory/616-116-0x0000000026F60000-0x0000000026F86000-memory.dmp

Filesize
152KB

Download
memory/616-86-0x0000000026E40000-0x0000000026E66000-memory.dmp

Filesize
152KB

Download
memory/616-66-0x0000000026D80000-0x0000000026DA6000-memory.dmp

Filesize
152KB

Download
memory/616-51-0x0000000026CF0000-0x0000000026D16000-memory.dmp

Filesize
152KB

Download
memory/616-36-0x0000000026C60000-0x0000000026C86000-memory.dmp

Filesize
152KB

Download
memory/616-21-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2400-7-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2400-12-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2400-9-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2400-5-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2400-3-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download