e97b0face1fc6e678218a66528f3df8787c0c101f27b8d77ca903fe1f46abcbb

Analysis

max time kernel
92s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
03-02-2024 06:15

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General

Target

8b9be3c861b841e3720d9a7a08ab4262.exe
Size

1.2MB
MD5

8b9be3c861b841e3720d9a7a08ab4262
SHA1

899a1d0a02f9a226d52aa94f06e57b2de26f09c1
SHA256

e97b0face1fc6e678218a66528f3df8787c0c101f27b8d77ca903fe1f46abcbb
SHA512

f63c10bae94dfcf11c1fb45188388c71027a8eadca712ddc994efd0dece831c43cfa52003a6836f9ace003294f2223c94fe3555b64ead121a3727ea87e19bb23
SSDEEP

24576:APNoNjFsX+hmKfZpeXG4S1ZOT/h6VE2m+UeNIGPnyCY01cnwQv2X3AVcj:AlofsXYmKfbUHyZg/mrllZ6q1EvA3AVs

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2136	IFinst27.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1664-0-0x0000000000400000-0x000000000042B000-memory.dmp	upx
behavioral2/files/0x0007000000023225-3.dat	upx
behavioral2/memory/1664-4-0x0000000000400000-0x000000000042B000-memory.dmp	upx
behavioral2/memory/2136-6-0x0000000000400000-0x000000000042B000-memory.dmp	upx

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\IFinst27.exe	8b9be3c861b841e3720d9a7a08ab4262.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1664 wrote to memory of 2136	1664	8b9be3c861b841e3720d9a7a08ab4262.exe	85
PID 1664 wrote to memory of 2136	1664	8b9be3c861b841e3720d9a7a08ab4262.exe	85
PID 1664 wrote to memory of 2136	1664	8b9be3c861b841e3720d9a7a08ab4262.exe	85

C:\Users\Admin\AppData\Local\Temp\8b9be3c861b841e3720d9a7a08ab4262.exe
"C:\Users\Admin\AppData\Local\Temp\8b9be3c861b841e3720d9a7a08ab4262.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1664
- C:\Windows\IFinst27.exe
  "C:\Windows\IFinst27.exe" -IC:\Users\Admin\AppData\Local\Temp\8b9be3c861b841e3720d9a7a08ab4262.exe
  2⤵
  - Executes dropped EXE
  PID:2136

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\IFinst27.exe

Filesize
64KB

MD5
9c17bca3ef837bacded7e4299508e71d

SHA1
253c7e956ad6cb66e0e47e5d9a6a19d78e9c96e0

SHA256
2405e5479aeb7d43d1362969b9c439e5931b8f900f9adfe0faaa986365415193

SHA512
12c1c5dbdf763d6d361b9d412794b0d85b6134843114120b843f30db198a3a211e2c06eadd3ed25271b4cd06a7367df7dafc6b9b33b1bce479f3ad050caeb625

Download Submit
memory/1664-0-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/1664-4-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/2136-6-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download