d69803659793ac371f197cfdc469771117aaab3f7fd9791e92637c24ff57deb1

Analysis

max time kernel
156s
max time network
164s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28-06-2024 14:26

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General

Target

2024-06-28_079ce46f609844fbc8650a652e4d9ea8_cryptolocker.exe
Size

36KB
MD5

079ce46f609844fbc8650a652e4d9ea8
SHA1

40b68d0f9357bb37a9c4c9431f81130293140aaf
SHA256

d69803659793ac371f197cfdc469771117aaab3f7fd9791e92637c24ff57deb1
SHA512

400735d1abf2218a50914a95b4b8b57dacdcee364dc1add3547e3b2e71745629a60e9eacdd177f52b263755ba4ca6d9afb6fcc0c324ca7e4e15753f6ae9ff99b
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkIT6:qDdFJy3QMOtEvwDpjjWMl7T6

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3532-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3532-10-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023244-14.dat	CryptoLocker_rule2
behavioral2/memory/868-20-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/3532-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3532-10-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0008000000023244-14.dat	CryptoLocker_set1
behavioral2/memory/868-20-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/3532-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/3532-10-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x0008000000023244-14.dat	UPX
behavioral2/memory/868-20-0x0000000000500000-0x0000000000510000-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	2024-06-28_079ce46f609844fbc8650a652e4d9ea8_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
868	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3532-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/3532-10-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x0008000000023244-14.dat	upx
behavioral2/memory/868-20-0x0000000000500000-0x0000000000510000-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 3532 wrote to memory of 868	3532	2024-06-28_079ce46f609844fbc8650a652e4d9ea8_cryptolocker.exe	90
PID 3532 wrote to memory of 868	3532	2024-06-28_079ce46f609844fbc8650a652e4d9ea8_cryptolocker.exe	90
PID 3532 wrote to memory of 868	3532	2024-06-28_079ce46f609844fbc8650a652e4d9ea8_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-06-28_079ce46f609844fbc8650a652e4d9ea8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-28_079ce46f609844fbc8650a652e4d9ea8_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3532
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:868

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=3976 --field-trial-handle=2244,i,11878111470816612087,2265290141962607370,262144 --variations-seed-version /prefetch:8
1⤵
PID:1868

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
36KB

MD5
993efb140546535f2f509b8d4f89ce1a

SHA1
efa2acd7cebd377a3debff0b6cc145558f72edf0

SHA256
41afa88eb178f5f26cd468a375eafdc358254d3466fec7f58e856546724a421b

SHA512
cb5942a9255bfa06ad450a2181b56cf728bea6f9c9b46cac09cc8a33a2eb3b4e0cd46fd25fe2925344e30aacbbfc6c537ed718cdec84ba91eb66afe9ee3bd62d

Download Submit
memory/868-21-0x0000000000570000-0x0000000000576000-memory.dmp

Filesize
24KB

Download
memory/868-20-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/868-22-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/3532-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3532-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3532-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3532-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3532-10-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download