0257296199b8904347e66b6476d5ba5ce9291b5d64704f4cd17d08f6ae08576a

Analysis

max time kernel
147s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
29/05/2024, 16:54

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General

Target

2024-05-29_60b3ea851c4c477d506df018e4101339_cryptolocker.exe
Size

70KB
MD5

60b3ea851c4c477d506df018e4101339
SHA1

20385ab22538a64fbc11446abe87c0415b19be37
SHA256

0257296199b8904347e66b6476d5ba5ce9291b5d64704f4cd17d08f6ae08576a
SHA512

7382bf74571fdc8bdb7ff3c26988227a58ace1fbb027727557d3532b90ecd50972852cdf999c5b1da437600d1083fb36835436196b3242d99ec02fc65fdae568
SSDEEP

768:quVbxjgQNQXtckstOOtEvwDpjAaDOK6PsED3VK2+ZtyOjgO4r9vFAg2rq6W1A1PL:quJu9cvMOtEvwDpjWYTjipvF2bx1PQAL

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3696-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000900000002325d-13.dat	CryptoLocker_rule2
behavioral2/memory/3696-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/5064-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/3696-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000900000002325d-13.dat	CryptoLocker_set1
behavioral2/memory/3696-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/5064-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/3696-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/files/0x000900000002325d-13.dat	UPX
behavioral2/memory/3696-26-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/memory/5064-27-0x0000000000500000-0x000000000050F000-memory.dmp	UPX

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	2024-05-29_60b3ea851c4c477d506df018e4101339_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5064	asih.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/3696-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x000900000002325d-13.dat	upx
behavioral2/memory/3696-26-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/5064-27-0x0000000000500000-0x000000000050F000-memory.dmp	upx

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 3696 wrote to memory of 5064	3696	2024-05-29_60b3ea851c4c477d506df018e4101339_cryptolocker.exe	90
PID 3696 wrote to memory of 5064	3696	2024-05-29_60b3ea851c4c477d506df018e4101339_cryptolocker.exe	90
PID 3696 wrote to memory of 5064	3696	2024-05-29_60b3ea851c4c477d506df018e4101339_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-05-29_60b3ea851c4c477d506df018e4101339_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-29_60b3ea851c4c477d506df018e4101339_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3696
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:5064

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=1032 --field-trial-handle=3088,i,14310325015283915034,7660943942870463106,262144 --variations-seed-version /prefetch:8
1⤵
PID:4660

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
70KB

MD5
3a0dab425e36553abea6bb6d4a71f9ab

SHA1
5efd52be135c9830fb4a1a88b30309730d69193d

SHA256
bd11717841a5593e6bcdb7e3ea4f98fb3c645fbab02c05bb40468e3df60fc092

SHA512
58ef89f00f69492f16b381f255f5c58400762d5993a1ffe123f279bd1263a617481bbee829931c1b76c42f9bdeea5503392cef0d2916005b89820064b0816096

Download Submit
memory/3696-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3696-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/3696-2-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/3696-3-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/3696-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/5064-18-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/5064-24-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/5064-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download