71a6af38b2abe51bc25645d8bb64bb7ffda6190b5f8f372a6d4f3020ab47e6d7

Analysis

max time kernel
152s
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
23-05-2024 18:18

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General

Target

2024-05-23_aef05547629d8939ab63e36bb5448b95_cryptolocker.exe
Size

32KB
MD5

aef05547629d8939ab63e36bb5448b95
SHA1

80a098926127c3e2f38e015e572dc18127bbe395
SHA256

71a6af38b2abe51bc25645d8bb64bb7ffda6190b5f8f372a6d4f3020ab47e6d7
SHA512

697da97facb35b70199e3755195d2be9f6c59681581219662d9d635b9c134b64f06e6c83bdb228e14fac7bc431548c00ed82efb9e19e6e8b37a15ca89043a660
SSDEEP

384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTGOKei:bG74zYcgT/Ekd0ryfjUei

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2428-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
C:\Users\Admin\AppData\Local\Temp\hasfj.exe	CryptoLocker_rule2
behavioral2/memory/2428-18-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/5016-26-0x0000000008000000-0x000000000800A000-memory.dmp	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

Processes:

2024-05-23_aef05547629d8939ab63e36bb5448b95_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-05-23_aef05547629d8939ab63e36bb5448b95_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

hasfj.exe

pid process

5016 hasfj.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
5016	hasfj.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-23_aef05547629d8939ab63e36bb5448b95_cryptolocker.exe

description	pid	process	target process
PID 2428 wrote to memory of 5016	2428	2024-05-23_aef05547629d8939ab63e36bb5448b95_cryptolocker.exe	hasfj.exe
PID 2428 wrote to memory of 5016	2428	2024-05-23_aef05547629d8939ab63e36bb5448b95_cryptolocker.exe	hasfj.exe
PID 2428 wrote to memory of 5016	2428	2024-05-23_aef05547629d8939ab63e36bb5448b95_cryptolocker.exe	hasfj.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_aef05547629d8939ab63e36bb5448b95_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_aef05547629d8939ab63e36bb5448b95_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2428

C:\Users\Admin\AppData\Local\Temp\hasfj.exe
"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
2⤵
- Executes dropped EXE
PID:5016

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=4104 --field-trial-handle=2280,i,11703952675008463361,17436195144517971517,262144 --variations-seed-version /prefetch:8
1⤵
PID:2212

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\hasfj.exe
Filesize
32KB

MD5
911a473e44de1758418d9082d589d0f0

SHA1
51d03b01831c1dc24afbb5045a58b20098ad4eae

SHA256
73333b164a4c8efe0b7e2165637e21ac154b4fbf897134f0bd65c9bc51723aa3

SHA512
377daf599e8af6e38b5997f7890600e8a54d38776849060203b40299bae1302fbbfbfd0311ad27c7d9a330bd5f011b7555c82bae30a6a91415f513bf05cd2130

Download Submit
memory/2428-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2428-1-0x00000000021E0000-0x00000000021E6000-memory.dmp

Filesize
24KB

Download
memory/2428-2-0x00000000021E0000-0x00000000021E6000-memory.dmp

Filesize
24KB

Download
memory/2428-3-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/2428-18-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/5016-25-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/5016-26-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download