ebc023173012bcee470b751117439523cbbdb1a4f789121696a62c4d2d6876b3

Analysis

max time kernel
134s
max time network
133s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
29/05/2024, 06:37

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General

Target

2024-05-29_6e3eb8f2b16c65c967255edded769117_cryptolocker.exe
Size

64KB
MD5

6e3eb8f2b16c65c967255edded769117
SHA1

691941fcb45202a9753180fcd06a0ca3491921f4
SHA256

ebc023173012bcee470b751117439523cbbdb1a4f789121696a62c4d2d6876b3
SHA512

cd7cb92b487f976bd6bcb2ca02841ca303ab1f4f4fb4f132e43ac012bc5941c775c07b5e55f53ef7bfaf7ddd903fa47add601c925ca9550801a9669a5effc633
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF293Wo:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7H

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002351d-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002351d-12.dat	CryptoLocker_set1

Checks computer location settings 2 TTPs 2 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	2024-05-29_6e3eb8f2b16c65c967255edded769117_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
2716	hurok.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 4552 wrote to memory of 2716	4552	2024-05-29_6e3eb8f2b16c65c967255edded769117_cryptolocker.exe	90
PID 4552 wrote to memory of 2716	4552	2024-05-29_6e3eb8f2b16c65c967255edded769117_cryptolocker.exe	90
PID 4552 wrote to memory of 2716	4552	2024-05-29_6e3eb8f2b16c65c967255edded769117_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-05-29_6e3eb8f2b16c65c967255edded769117_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-29_6e3eb8f2b16c65c967255edded769117_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4552
- C:\Users\Admin\AppData\Local\Temp\hurok.exe
  "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:2716

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=3404,i,1999448010053300448,1112699187621658374,262144 --variations-seed-version --mojo-platform-channel-handle=4216 /prefetch:8
1⤵
PID:1008

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\hurok.exe

Filesize
65KB

MD5
787fc8736a939cc3802f6d136f73743d

SHA1
2397aa258a723ecfe6bae15905e05fa4777e41a5

SHA256
dcc1d25ae39cfc9f798b4a1ec94a2aabbd14bd18a5d09849f85e35ad478d7051

SHA512
18fddd860ecdd831b745a673dd6e7a61331c3548a66074a84e2d59d45c7dd87c202305cd0dc99a37706975d5f16fce50c7de79043ae60bf2a724669ac13bedad

Download Submit
memory/2716-25-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/4552-0-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/4552-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4552-8-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download