8e525ab087d997d1fe8fb692016c6800d61bd5b9568fb83432897f4c3b752dc2

Analysis

max time kernel
152s
max time network
161s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
07/03/2024, 03:43

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General

Target

2024-03-07_e282f6f743a42090781045700059c8a4_cryptolocker.exe
Size

81KB
MD5

e282f6f743a42090781045700059c8a4
SHA1

ecc8493b03a07096091c9453b9e73c7557595c64
SHA256

8e525ab087d997d1fe8fb692016c6800d61bd5b9568fb83432897f4c3b752dc2
SHA512

5f8b1123fc40d9058cd03384a2f8660939ee1300b0a21bddcc8dc24cb04508a25dd2b7c49085a8c5ace9f1c66d5fb1ac56e008d6b5b9813c96c4e40e4b8f3e5f
SSDEEP

1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMMWEl:TCjsIOtEvwDpj5HE/OUHnSM9

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4360-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000002332f-13.dat	CryptoLocker_rule2
behavioral2/memory/4360-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4220-26-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4360-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000800000002332f-13.dat	CryptoLocker_set1
behavioral2/memory/4360-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4220-26-0x0000000000500000-0x000000000050E000-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-1-5-21-1904519900-954640453-4250331663-1000\Control Panel\International\Geo\Nation	2024-03-07_e282f6f743a42090781045700059c8a4_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4220	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 4360 wrote to memory of 4220	4360	2024-03-07_e282f6f743a42090781045700059c8a4_cryptolocker.exe	97
PID 4360 wrote to memory of 4220	4360	2024-03-07_e282f6f743a42090781045700059c8a4_cryptolocker.exe	97
PID 4360 wrote to memory of 4220	4360	2024-03-07_e282f6f743a42090781045700059c8a4_cryptolocker.exe	97

C:\Users\Admin\AppData\Local\Temp\2024-03-07_e282f6f743a42090781045700059c8a4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-07_e282f6f743a42090781045700059c8a4_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4360
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:4220

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=4152 --field-trial-handle=3016,i,1323102786462900035,7687994236215859601,262144 --variations-seed-version /prefetch:8
1⤵
PID:4980

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\misid.exe

Filesize
81KB

MD5
843b71ee31b47081be678f0c3e0d2dd8

SHA1
a7a50bdba0da2b09fa87ad5e68075c993b94a5c6

SHA256
a1eec1ac07c3668d2d0214591cd00ff3f7f80a987eb61fb35e8ec201d3968d65

SHA512
f41b883001773373ecbe5d6403aa98ccb28656f9e01ad1b2a5e022509178485763c20826f9839af69778d84a59e3eaa4b7dd54bdd96785553859cc06a85bf9b8

Download Submit
memory/4220-19-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/4220-21-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/4220-26-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/4360-0-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/4360-1-0x0000000002290000-0x0000000002296000-memory.dmp

Filesize
24KB

Download
memory/4360-2-0x0000000002290000-0x0000000002296000-memory.dmp

Filesize
24KB

Download
memory/4360-3-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download
memory/4360-17-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download