e5ad5a6e4d758326d16653ed9a1546c1d53d27748b571094efd82dc592f0ac9c

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
15-05-2024 17:58

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General

Target

2024-05-15_80e8d3ecd7df53498c8fa29feebfef25_cryptolocker.exe
Size

47KB
MD5

80e8d3ecd7df53498c8fa29feebfef25
SHA1

7a3a6387a23755a09d23a9b1c7ffe8e0e1aa5ca6
SHA256

e5ad5a6e4d758326d16653ed9a1546c1d53d27748b571094efd82dc592f0ac9c
SHA512

cd93de916647b9076e9e1d3267f220119435c9c89467fbc7d6a37824b2f277999e0f3894f1720527fbbfb0a2631fc0d15b2eeeefe0ae76b046c0659b0075bdc9
SSDEEP

768:P6LsoVEeegiZPvEhHSP+gp/QtOOtEvwDpjBBMLZdzuqpXsiE8Wq/Dpkf:P6Q0ElP6G+gJQMOtEvwDpjB8WMlE

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/2096-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0009000000023607-12.dat	CryptoLocker_rule2
behavioral2/memory/4140-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2096-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4140-27-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/2096-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0009000000023607-12.dat	CryptoLocker_set1
behavioral2/memory/4140-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2096-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4140-27-0x0000000000500000-0x000000000050B000-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-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	2024-05-15_80e8d3ecd7df53498c8fa29feebfef25_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4140	asih.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 2096 wrote to memory of 4140	2096	2024-05-15_80e8d3ecd7df53498c8fa29feebfef25_cryptolocker.exe	89
PID 2096 wrote to memory of 4140	2096	2024-05-15_80e8d3ecd7df53498c8fa29feebfef25_cryptolocker.exe	89
PID 2096 wrote to memory of 4140	2096	2024-05-15_80e8d3ecd7df53498c8fa29feebfef25_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-05-15_80e8d3ecd7df53498c8fa29feebfef25_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-15_80e8d3ecd7df53498c8fa29feebfef25_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2096
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4140

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=4372,i,15142778360084620907,1763097090506261076,262144 --variations-seed-version --mojo-platform-channel-handle=4460 /prefetch:8
1⤵
PID:4516

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\asih.exe

Filesize
47KB

MD5
5ea039166740b65d215e03464d9f8d32

SHA1
4e5144c4b4925757fc8999e1786f81058dc04531

SHA256
6c0c501e0090563f517c5f77b27559705c93e2cd3d2b295484190ab91d07b694

SHA512
de1ed6080bbb4f2478c9b58b9a2ecee2aa83aa7328dc0c1147f0980d6525331d0627027f769024a6d2d772f7e6ed4d6d615880190002a941571d3705e0881e7c

Download Submit
memory/2096-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2096-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2096-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2096-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2096-18-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4140-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4140-20-0x0000000001F60000-0x0000000001F66000-memory.dmp

Filesize
24KB

Download
memory/4140-26-0x00000000021E0000-0x00000000021E6000-memory.dmp

Filesize
24KB

Download
memory/4140-27-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download