65ffa23bbd141a743074f61582619305e1e0ecd8428290a374f81ead89ff0625

Analysis

max time kernel
151s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28/03/2024, 00:41

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General

Target

2024-03-28_88ee7dbbbe2f4985b2d2c685c703dd63_cryptolocker.exe
Size

43KB
MD5

88ee7dbbbe2f4985b2d2c685c703dd63
SHA1

ee60c9016837b2b0b5b5acb9fd9b709336e759b3
SHA256

65ffa23bbd141a743074f61582619305e1e0ecd8428290a374f81ead89ff0625
SHA512

9dec74df87c37521683328cf60fbaefc052d43acf98907fb6cb4858e638a2bf361dd07f1ec31a3215329b8dba91dbd87b65398bef24d0d42eac2f337e6ad74b8
SSDEEP

768:bgX4zYcgTEu6QOaryfjqDDw3sCu5b+syQNA1:bgGYcA/53GADw8Cl/n1

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00030000000227e7-12.dat	CryptoLocker_rule2

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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-03-28_88ee7dbbbe2f4985b2d2c685c703dd63_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1404	hasfj.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 2272 wrote to memory of 1404	2272	2024-03-28_88ee7dbbbe2f4985b2d2c685c703dd63_cryptolocker.exe	97
PID 2272 wrote to memory of 1404	2272	2024-03-28_88ee7dbbbe2f4985b2d2c685c703dd63_cryptolocker.exe	97
PID 2272 wrote to memory of 1404	2272	2024-03-28_88ee7dbbbe2f4985b2d2c685c703dd63_cryptolocker.exe	97

C:\Users\Admin\AppData\Local\Temp\2024-03-28_88ee7dbbbe2f4985b2d2c685c703dd63_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-28_88ee7dbbbe2f4985b2d2c685c703dd63_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2272
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:1404

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=3940 --field-trial-handle=2284,i,15722001240173834669,15048020084704567542,262144 --variations-seed-version /prefetch:8
1⤵
PID:2528

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\hasfj.exe

Filesize
44KB

MD5
79b80f96510d69113f2a63dfb72aa911

SHA1
50262f7a2c0cba73c5bef42a13f263541ab53af5

SHA256
713e5c9a61aaae6ce6b84b94a02abb37bace5ca19a7363ef608bae55c4131d4e

SHA512
f233c8631af04fb5449fbdd4723df4789337fb8f4e93a631825acc2fb9e4b2876c6b0161e398b593c45efc86d97049da50262145dc04e564acfd6b206717c336

Download Submit
memory/1404-17-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/1404-18-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/2272-0-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/2272-1-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/2272-2-0x0000000002340000-0x0000000002346000-memory.dmp

Filesize
24KB

Download