e77160fbf8a1b25edfb2d235127162f0de19fd30af4c136d220fe674b002b544

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
11/03/2024, 01:33

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General

Target

bf7e052ab31d773942b1ded15520c7f3.exe
Size

24KB
MD5

bf7e052ab31d773942b1ded15520c7f3
SHA1

ba2f288a9bc50f16d25421a0dcf629758ca52a25
SHA256

e77160fbf8a1b25edfb2d235127162f0de19fd30af4c136d220fe674b002b544
SHA512

d24cf454a5dd878249e2d04d6df6852d1399328cb48ba7b74410d5acc155b65de6599c295322a38e816ef0bbbf0065021374315ce5e8b7c5d1ff17f58449a34f
SSDEEP

384:ZLIR145WA+rS/EsMmRBtKyu9kw+CBY4TmbLJNcdrnYh8TPzdfeOKmE/AhWcu:Jh9Z/v5BLTOqlNsrnuCPzFeOK1Awc

Score

8^/10

persistence upx

Malware Config

Signatures

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\explorer\run	bf7e052ab31d773942b1ded15520c7f3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\rare = "C:\\Users\\Admin\\AppData\\Local\\Temp\\bf7e052ab31d773942b1ded15520c7f3.exe"	bf7e052ab31d773942b1ded15520c7f3.exe

Executes dropped EXE 1 IoCs

pid	Process
440	imsmn.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000700000001e59e-2.dat	upx
behavioral2/memory/440-3-0x0000000000400000-0x0000000000408000-memory.dmp	upx
behavioral2/memory/440-5-0x0000000000400000-0x0000000000408000-memory.dmp	upx

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4856	bf7e052ab31d773942b1ded15520c7f3.exe
4856	bf7e052ab31d773942b1ded15520c7f3.exe
440	imsmn.exe
440	imsmn.exe
440	imsmn.exe
4856	bf7e052ab31d773942b1ded15520c7f3.exe
440	imsmn.exe
4856	bf7e052ab31d773942b1ded15520c7f3.exe
440	imsmn.exe
4856	bf7e052ab31d773942b1ded15520c7f3.exe
440	imsmn.exe
4856	bf7e052ab31d773942b1ded15520c7f3.exe
440	imsmn.exe
440	imsmn.exe
4856	bf7e052ab31d773942b1ded15520c7f3.exe
4856	bf7e052ab31d773942b1ded15520c7f3.exe
440	imsmn.exe
4856	bf7e052ab31d773942b1ded15520c7f3.exe
440	imsmn.exe
4856	bf7e052ab31d773942b1ded15520c7f3.exe
4856	bf7e052ab31d773942b1ded15520c7f3.exe
4856	bf7e052ab31d773942b1ded15520c7f3.exe
440	imsmn.exe
440	imsmn.exe
4856	bf7e052ab31d773942b1ded15520c7f3.exe
4856	bf7e052ab31d773942b1ded15520c7f3.exe
440	imsmn.exe
440	imsmn.exe
4856	bf7e052ab31d773942b1ded15520c7f3.exe
4856	bf7e052ab31d773942b1ded15520c7f3.exe
440	imsmn.exe
440	imsmn.exe
4856	bf7e052ab31d773942b1ded15520c7f3.exe
4856	bf7e052ab31d773942b1ded15520c7f3.exe
440	imsmn.exe
440	imsmn.exe
4856	bf7e052ab31d773942b1ded15520c7f3.exe
4856	bf7e052ab31d773942b1ded15520c7f3.exe
440	imsmn.exe
440	imsmn.exe
4856	bf7e052ab31d773942b1ded15520c7f3.exe
4856	bf7e052ab31d773942b1ded15520c7f3.exe
440	imsmn.exe
440	imsmn.exe
4856	bf7e052ab31d773942b1ded15520c7f3.exe
4856	bf7e052ab31d773942b1ded15520c7f3.exe
440	imsmn.exe
440	imsmn.exe
4856	bf7e052ab31d773942b1ded15520c7f3.exe
4856	bf7e052ab31d773942b1ded15520c7f3.exe
440	imsmn.exe
440	imsmn.exe
4856	bf7e052ab31d773942b1ded15520c7f3.exe
4856	bf7e052ab31d773942b1ded15520c7f3.exe
440	imsmn.exe
440	imsmn.exe
4856	bf7e052ab31d773942b1ded15520c7f3.exe
4856	bf7e052ab31d773942b1ded15520c7f3.exe
440	imsmn.exe
440	imsmn.exe
4856	bf7e052ab31d773942b1ded15520c7f3.exe
4856	bf7e052ab31d773942b1ded15520c7f3.exe
440	imsmn.exe
440	imsmn.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4856 wrote to memory of 440	4856	bf7e052ab31d773942b1ded15520c7f3.exe	89
PID 4856 wrote to memory of 440	4856	bf7e052ab31d773942b1ded15520c7f3.exe	89
PID 4856 wrote to memory of 440	4856	bf7e052ab31d773942b1ded15520c7f3.exe	89

C:\Users\Admin\AppData\Local\Temp\bf7e052ab31d773942b1ded15520c7f3.exe
"C:\Users\Admin\AppData\Local\Temp\bf7e052ab31d773942b1ded15520c7f3.exe"
1⤵
- Adds policy Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4856
- C:\Users\Admin\AppData\Local\Temp\imsmn.exe
  C:\Users\Admin\AppData\Local\Temp\imsmn.exe
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  PID:440

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\imsmn.exe

Filesize
6KB

MD5
d03b25f1662a26d6922e6d24828cd509

SHA1
7d3c8e5c4ade92e6d692a63a2fc8b56089dc6193

SHA256
f34dc3e7292f569c454bc492c9bf3e19c3cb4650dc2397b6437367facb2e39dd

SHA512
69cff54d7f0f48a28a0f338d47ec6a599d83968972983a778577bedd7d830a831ad6adb29ad000c63d94d9ae625e74555bfb45c1d257aceb3d44be1814c82d8d

Download Submit
memory/440-3-0x0000000000400000-0x0000000000408000-memory.dmp

Filesize
32KB

Download
memory/440-5-0x0000000000400000-0x0000000000408000-memory.dmp

Filesize
32KB

Download