15fe618d8e827be3368fde96b031e617f1b5d0a491e7f301197039274c27938e

Analysis

max time kernel
149s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240319-en
resource tags

arch:x64arch:x86image:win10v2004-20240319-enlocale:en-usos:windows10-2004-x64system
submitted
27/03/2024, 17:49

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General

Target

15fe618d8e827be3368fde96b031e617f1b5d0a491e7f301197039274c27938e.exe
Size

35KB
MD5

ef6aff1c3857293362924a4a7ffeb8ac
SHA1

5bcd17af196edfbee1a1ae8ded04807000dd5a3c
SHA256

15fe618d8e827be3368fde96b031e617f1b5d0a491e7f301197039274c27938e
SHA512

681d31bb1dd967cac47ec2d8ac240627d1242e87bc6d61588c214c39d30c3c9ef6bacf3235098db9491d58811cea725c02dc2e61459c66202ef39c460b76b8b6
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6WaJIOc+UPPb6b:YGzl5wjRQBBOsP1QMOtEvwDpjgarJb

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/4644-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000002335f-13.dat	CryptoLocker_rule2
behavioral2/memory/4644-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/4644-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000800000002335f-13.dat	CryptoLocker_set1
behavioral2/memory/4644-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

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-1-5-21-817259280-2658881748-983986378-1000\Control Panel\International\Geo\Nation	15fe618d8e827be3368fde96b031e617f1b5d0a491e7f301197039274c27938e.exe

Executes dropped EXE 1 IoCs

pid	Process
1784	asih.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 4644 wrote to memory of 1784	4644	15fe618d8e827be3368fde96b031e617f1b5d0a491e7f301197039274c27938e.exe	95
PID 4644 wrote to memory of 1784	4644	15fe618d8e827be3368fde96b031e617f1b5d0a491e7f301197039274c27938e.exe	95
PID 4644 wrote to memory of 1784	4644	15fe618d8e827be3368fde96b031e617f1b5d0a491e7f301197039274c27938e.exe	95

C:\Users\Admin\AppData\Local\Temp\15fe618d8e827be3368fde96b031e617f1b5d0a491e7f301197039274c27938e.exe
"C:\Users\Admin\AppData\Local\Temp\15fe618d8e827be3368fde96b031e617f1b5d0a491e7f301197039274c27938e.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4644
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1784

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4168 --field-trial-handle=2288,i,11069632825633797559,14829202121434726371,262144 --variations-seed-version /prefetch:8
1⤵
PID:1600

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\asih.exe

Filesize
35KB

MD5
936d0589287f5718bbab3e40c38278bb

SHA1
affc83e5301e34f30eaddbe04230cc98a0b593aa

SHA256
f3eb17514730195a49e00d35ebaecb9dee20aebdc72c782e4551c1218f0b157a

SHA512
cf57243b9380852935c96d5106875152ef65c1515a419d33522f37599ec803ade934c220ed37a43b21170669d29be7e81e5e2b22263c75f758907a9a459ff93d

Download Submit
memory/1784-19-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/1784-25-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4644-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4644-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4644-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4644-3-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/4644-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download