1557541d54a9cf5ced3f1b8feb554e8f5c75adf2e9e5dd5542ffc35486735aed

Analysis

max time kernel
146s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
10-03-2024 10:29

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General

Target

2024-03-10_3161e23a1c465e12253f55145779f03e_cryptolocker.exe
Size

59KB
MD5

3161e23a1c465e12253f55145779f03e
SHA1

ea2be9133b7809a687731716e0f775f2cf21cf97
SHA256

1557541d54a9cf5ced3f1b8feb554e8f5c75adf2e9e5dd5542ffc35486735aed
SHA512

3faa8fc872fc9fac10264fe2d7d798c74f5394778944859b45eef33fc28d695111b40cc1ad8a85fd28d4449bd8e8f0b360e00bd18ca8254112fa5b5f34b324d1
SSDEEP

1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMB:TCjsIOtEvwDpj5HE/OUHnSMC

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/2364-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000002324f-13.dat	CryptoLocker_rule2
behavioral2/memory/2364-25-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3584-26-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/2364-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000800000002324f-13.dat	CryptoLocker_set1
behavioral2/memory/2364-25-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3584-26-0x0000000000500000-0x000000000050E000-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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-03-10_3161e23a1c465e12253f55145779f03e_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3584	misid.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 2364 wrote to memory of 3584	2364	2024-03-10_3161e23a1c465e12253f55145779f03e_cryptolocker.exe	100
PID 2364 wrote to memory of 3584	2364	2024-03-10_3161e23a1c465e12253f55145779f03e_cryptolocker.exe	100
PID 2364 wrote to memory of 3584	2364	2024-03-10_3161e23a1c465e12253f55145779f03e_cryptolocker.exe	100

C:\Users\Admin\AppData\Local\Temp\2024-03-10_3161e23a1c465e12253f55145779f03e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-10_3161e23a1c465e12253f55145779f03e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2364
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:3584

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=4136 --field-trial-handle=3192,i,2785050981002401924,4037047756083432660,262144 --variations-seed-version /prefetch:8
1⤵
PID:4432

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\misid.exe

Filesize
60KB

MD5
bd7a9eb3b55de87c51d864f98a2cf983

SHA1
3bd112cd6e480df0e3c2811cd815041def70b2b3

SHA256
0f8d71732c94975883b893f9548e8d5d75466662353537b3d5d517e0a8cfb86a

SHA512
ac572a15cbd0c511a2b7e5236b7867f035e3a6384414eef705fe8004a2f7d9f6a9c3a83e6974fcbf92b7d73c8030517ddbc06480728b94924d0fb26f53872343

Download Submit
memory/2364-0-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/2364-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/2364-2-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/2364-3-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/2364-25-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/3584-18-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/3584-19-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/3584-26-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download