d94eaa5dc045af81dbc06d85778ee6471085eb4db7c1eee681802cc695b00fec

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
20/04/2024, 03:33

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General

Target

d94eaa5dc045af81dbc06d85778ee6471085eb4db7c1eee681802cc695b00fec.exe
Size

173KB
MD5

1c8d2357719357f397da2aa79ac50820
SHA1

a54091d21828f59c6cba170f27a29eda92159bb1
SHA256

d94eaa5dc045af81dbc06d85778ee6471085eb4db7c1eee681802cc695b00fec
SHA512

ddb9722ad1ed6ee446861257b78dc0cde07ae286c86e51d7359ad7b9cc597d3555f6e5b3b11223d083508a02f86762f7041bd1d938e5b2e19c12fe7aa80d8da2
SSDEEP

3072:986OIvyzBIEAXQxuJMIfPrY8Uv3B2f+AUTpldpukuG41s51qSBTwXN:9jOIqBITgwHrY8wA+AUTpldpbKSB8N

Score

9^/10

upx

Malware Config

Signatures

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/3400-0-0x0000000000400000-0x00000000004E9000-memory.dmp	UPX
behavioral2/memory/3400-1-0x0000000000400000-0x00000000004E9000-memory.dmp	UPX
behavioral2/files/0x000500000002326f-6.dat	UPX
behavioral2/memory/2880-14-0x0000000000400000-0x00000000004E9000-memory.dmp	UPX
behavioral2/memory/2880-15-0x0000000000400000-0x00000000004E9000-memory.dmp	UPX

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2177723727-746291240-1644359950-1000\Control Panel\International\Geo\Nation	d94eaa5dc045af81dbc06d85778ee6471085eb4db7c1eee681802cc695b00fec.exe

Executes dropped EXE 1 IoCs

pid	Process
2880	biwagox.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3400-0-0x0000000000400000-0x00000000004E9000-memory.dmp	upx
behavioral2/files/0x000500000002326f-6.dat	upx
behavioral2/memory/2880-14-0x0000000000400000-0x00000000004E9000-memory.dmp	upx

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 3400 wrote to memory of 2880	3400	d94eaa5dc045af81dbc06d85778ee6471085eb4db7c1eee681802cc695b00fec.exe	85
PID 3400 wrote to memory of 2880	3400	d94eaa5dc045af81dbc06d85778ee6471085eb4db7c1eee681802cc695b00fec.exe	85
PID 3400 wrote to memory of 2880	3400	d94eaa5dc045af81dbc06d85778ee6471085eb4db7c1eee681802cc695b00fec.exe	85

C:\Users\Admin\AppData\Local\Temp\d94eaa5dc045af81dbc06d85778ee6471085eb4db7c1eee681802cc695b00fec.exe
"C:\Users\Admin\AppData\Local\Temp\d94eaa5dc045af81dbc06d85778ee6471085eb4db7c1eee681802cc695b00fec.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3400
- C:\Users\Admin\AppData\Local\Temp\biwagox.exe
  "C:\Users\Admin\AppData\Local\Temp\biwagox.exe"
  2⤵
  - Executes dropped EXE
  PID:2880

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
173KB

MD5
4ec7aa138a8e7176d4d72ebc213c670d

SHA1
df2ec225db7518d97ed2b76e71daaf6327c592dc

SHA256
da57b1650a2b5037ed6170391e993279c8bb4052c2fd65d8cb9e40cb29479afd

SHA512
461156a8d05adbe38beac16f9bf7b485c0a4680326c444a1f9768fe5a14ff9ff30d2f3331c60442a6eea47561e1cc0bcd006671fe4e4d49762b26339a049935e

Download Submit
memory/2880-14-0x0000000000400000-0x00000000004E9000-memory.dmp

Filesize
932KB

Download
memory/2880-15-0x0000000000400000-0x00000000004E9000-memory.dmp

Filesize
932KB

Download
memory/3400-0-0x0000000000400000-0x00000000004E9000-memory.dmp

Filesize
932KB

Download
memory/3400-1-0x0000000000400000-0x00000000004E9000-memory.dmp

Filesize
932KB

Download