7e85c66482d4209bbf5706d1e1954549cc45ed4133b992abbcf36c27c1a5b9af

Analysis

max time kernel
0s
max time network
107s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
05/01/2024, 03:32

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General

Target

42a5f085cb986c0b7687afc3b050e168.exe
Size

123KB
MD5

42a5f085cb986c0b7687afc3b050e168
SHA1

7538dcb9489b66b34ac5fe9d537c4bf0b1550700
SHA256

7e85c66482d4209bbf5706d1e1954549cc45ed4133b992abbcf36c27c1a5b9af
SHA512

4e39bb2e7af019788e5ce78d6d9f92ef6e550ad5312ce8a480f0635430e2affed3af886c6b15b6249f687445622dcad9b95d248d3980d9b5b4d3cb5cd5704ef5
SSDEEP

3072:OeSQ41MZrrOwzrq5Ss9eYfphfFQkUcot3EpeBWLLM8M:OVYrJrOSsRwcpY

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4844	iaccess32.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3108-0-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/files/0x000200000001fafe-4.dat	upx
behavioral2/memory/4844-6-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/3108-5-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/files/0x000200000001fafe-3.dat	upx
behavioral2/memory/4844-58-0x0000000000400000-0x000000000042E000-memory.dmp	upx

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\iaccess32.exe	42a5f085cb986c0b7687afc3b050e168.exe
File created	C:\Windows\tmlpcert2007	iaccess32.exe

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

System Information Discovery
T1082

Runs regedit.exe 1 IoCs

pid	Process
2336	regedit.exe

Suspicious use of SetWindowsHookEx 5 IoCs

pid	Process
3108	42a5f085cb986c0b7687afc3b050e168.exe
4844	iaccess32.exe
4844	iaccess32.exe
4844	iaccess32.exe
4844	iaccess32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3108 wrote to memory of 4844	3108	42a5f085cb986c0b7687afc3b050e168.exe	22
PID 3108 wrote to memory of 4844	3108	42a5f085cb986c0b7687afc3b050e168.exe	22
PID 3108 wrote to memory of 4844	3108	42a5f085cb986c0b7687afc3b050e168.exe	22

C:\Users\Admin\AppData\Local\Temp\42a5f085cb986c0b7687afc3b050e168.exe
"C:\Users\Admin\AppData\Local\Temp\42a5f085cb986c0b7687afc3b050e168.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3108
- C:\Windows\iaccess32.exe
  C:\Windows\iaccess32.exe
  2⤵
  - Executes dropped EXE
  - Drops file in Windows directory
  - Suspicious use of SetWindowsHookEx
  PID:4844

C:\Windows\SysWOW64\regsvr32.exe
regsvr32.exe /s "C:\Windows\system32\egaccess4_1071.dll"
1⤵
PID:4328

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k NetworkService -p -s TapiSrv
1⤵
PID:4320

C:\Windows\SysWOW64\regedit.exe
"C:\Windows\System32\regedit.exe" /s C:\Windows\tmlpcert2007
1⤵
- Runs regedit.exe
PID:2336

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\iaccess32.exe

Filesize
5KB

MD5
328a134891cb715c3f635f998ad97a34

SHA1
3e4c023eda1d338543a5c59d2ec9cd87cd3d1062

SHA256
f3d7b1229114fb5b44e0484ba0e54d1338363ba5d49572d11a76e9776c5d91a8

SHA512
860f005e8924cfa4b39f13cf7c2bdf1d21809af3cc3671cd3d9b5db6ccc63c2777b1ce2a6c43a9e165abcbeaf58115f53e95b554d871d8ae1225a1cd75f2d21a

Download Submit
C:\Windows\tmlpcert2007

Filesize
6KB

MD5
79f4311861a6578d6f35129095ef14e6

SHA1
9897343388cc3c7af1d508c4511205755c5d3e93

SHA256
96021d41f9db42dc88789286e43f14bf948bdf9c7ea2b6c4528ea9262691cb39

SHA512
9bf6257160c99a2152c54b27635f9bbd7e9e7d29eed707f2c8a4849447de0f9d2aafc9518e77788a4b5a410d7953fa7e92d8fc038792b570fe966aee82024348

Download Submit
memory/3108-0-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/3108-5-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4328-28-0x0000000010000000-0x0000000010047000-memory.dmp

Filesize
284KB

Download
memory/4328-60-0x0000000010000000-0x0000000010047000-memory.dmp

Filesize
284KB

Download
memory/4844-6-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4844-58-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download