a401f3ad33c4b18b6da40f15437465c654adcb1e1f6c1f4f880be057ee667cf2

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
04/06/2024, 17:36

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General

Target

2024-06-04_9639c0c89ab616af182360013c8de07f_cryptolocker.exe
Size

38KB
MD5

9639c0c89ab616af182360013c8de07f
SHA1

fcc7cdea88e599e778a7375d4e88231ea6e08e24
SHA256

a401f3ad33c4b18b6da40f15437465c654adcb1e1f6c1f4f880be057ee667cf2
SHA512

58320b51b397efa5ebda052b65e680818b92f433a6a0588ad50b9593fe22f702b55fb0158c5496ac8c0ac390f9d3f59b1c80e364abf141a684776bef8b7daf12
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBVajSKm5uhy7O4qqg9:X6QFElP6n+gJQMOtEvwDpjBcSKm5uhw2

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00090000000235bb-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00090000000235bb-12.dat	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-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	2024-06-04_9639c0c89ab616af182360013c8de07f_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1180	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 2616 wrote to memory of 1180	2616	2024-06-04_9639c0c89ab616af182360013c8de07f_cryptolocker.exe	90
PID 2616 wrote to memory of 1180	2616	2024-06-04_9639c0c89ab616af182360013c8de07f_cryptolocker.exe	90
PID 2616 wrote to memory of 1180	2616	2024-06-04_9639c0c89ab616af182360013c8de07f_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-06-04_9639c0c89ab616af182360013c8de07f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-04_9639c0c89ab616af182360013c8de07f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2616
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1180

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 --field-trial-handle=3760,i,15140928051103392835,1612840580898364401,262144 --variations-seed-version --mojo-platform-channel-handle=3804 /prefetch:8
1⤵
PID:2000

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
38KB

MD5
2c30b3c5f8ff59508d96f170f5e173f4

SHA1
b575c110f4a67121c39f27f169559bebd4dc7da4

SHA256
437a0967bae53ad4f5130f2c9ef13f5cb329da284edeaa966103703a1b259c1c

SHA512
13df927c7a372809f973fe9f5938286e4d8609a650d85ae85e3a4019d3baeaf29ddd0d7492df65da6e35097270afc8cc8e14729a589d95d5d0f199ab7fea5665

Download Submit
memory/1180-17-0x00000000021E0000-0x00000000021E6000-memory.dmp

Filesize
24KB

Download
memory/1180-18-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/2616-0-0x0000000000670000-0x0000000000676000-memory.dmp

Filesize
24KB

Download
memory/2616-1-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/2616-8-0x0000000000670000-0x0000000000676000-memory.dmp

Filesize
24KB

Download