c4d794c7da01bcecf9562f0aa37741cfa5783ca703afd46c887b675ec5149fed

Analysis

max time kernel
148s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
24/05/2024, 12:33

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General

Target

2024-05-24_58958746fdb214630091494f68889b31_cryptolocker.exe
Size

47KB
MD5

58958746fdb214630091494f68889b31
SHA1

6afa69f36e57ad866767179ace63d1c18f685b93
SHA256

c4d794c7da01bcecf9562f0aa37741cfa5783ca703afd46c887b675ec5149fed
SHA512

0206fbce8414cf3a7ff6b59f96bda8400ff50e44ae73d8059bf3be74b1ef87d07bc440fe2875aa5ac5fead2889a53d72b1b8311fe839a24ad6741027d320b42b
SSDEEP

768:P6LsoVEeegiZPvEhHSP+gp/QtOOtEvwDpjBBMLZdzuqpXsiE8Wq/DpkKo:P6Q0ElP6G+gJQMOtEvwDpjB8WMlO

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/2416-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000900000002351c-13.dat	CryptoLocker_rule2
behavioral2/memory/2416-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1056-26-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/2416-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000900000002351c-13.dat	CryptoLocker_set1
behavioral2/memory/2416-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1056-26-0x0000000000500000-0x000000000050B000-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	2024-05-24_58958746fdb214630091494f68889b31_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1056	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 2416 wrote to memory of 1056	2416	2024-05-24_58958746fdb214630091494f68889b31_cryptolocker.exe	91
PID 2416 wrote to memory of 1056	2416	2024-05-24_58958746fdb214630091494f68889b31_cryptolocker.exe	91
PID 2416 wrote to memory of 1056	2416	2024-05-24_58958746fdb214630091494f68889b31_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-05-24_58958746fdb214630091494f68889b31_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-24_58958746fdb214630091494f68889b31_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2416
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1056

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=3772,i,5711962389779687290,1245653010537220991,262144 --variations-seed-version --mojo-platform-channel-handle=4040 /prefetch:8
1⤵
PID:912

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
a511fc5c814ebb3db3d54bbf978aa551

SHA1
0c47c51dd378ed7e98f54efb1e8984aafc48c666

SHA256
bfa2e1d40ec558554ce49c2f9c2b5c96404c069f6b6c35351e10873122e9ddf7

SHA512
782fe7a0a1e439939b0a136a618134640716e4c896aa95ce460f9129a9bcd830e9fb0baf22dda1a875717949ede1fa6641e7d3a6ff766e0d8c2c04f9cf446954

Download Submit
memory/1056-19-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/1056-25-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1056-26-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2416-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2416-1-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/2416-2-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/2416-9-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/2416-16-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download