6f303f7583e3567729a0e26129709352fd8e6915d8a374ad094642c5b8855466

Analysis

max time kernel
147s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
13/06/2024, 11:46

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General

Target

2024-06-13_54ea2cfcd587da7d12b842baa24d8030_cryptolocker.exe
Size

40KB
MD5

54ea2cfcd587da7d12b842baa24d8030
SHA1

f92421f3a7081f26ff4daf4f0ca3759237cf5d1c
SHA256

6f303f7583e3567729a0e26129709352fd8e6915d8a374ad094642c5b8855466
SHA512

ebe5fc80d0af24271bcf86f4cd86a0c772be4e82d18ace13e4b59dadb51f344dc104fe84661450cef00cc1fb4ecd1791554efb4d9eed86eb5dd7aec82af04699
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYlT:qDdFJy3QMOtEvwDpjjWMl7T6T

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/528-1-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0009000000023651-13.dat	CryptoLocker_rule2
behavioral2/memory/528-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2888-19-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2888-28-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/528-1-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0009000000023651-13.dat	CryptoLocker_set1
behavioral2/memory/528-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2888-19-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2888-28-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/528-1-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x0009000000023651-13.dat	UPX
behavioral2/memory/528-18-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/2888-19-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/2888-28-0x0000000000500000-0x0000000000510000-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-1-5-21-3665033694-1447845302-680750983-1000\Control Panel\International\Geo\Nation	2024-06-13_54ea2cfcd587da7d12b842baa24d8030_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2888	asih.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/528-1-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x0009000000023651-13.dat	upx
behavioral2/memory/528-18-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/2888-19-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/2888-28-0x0000000000500000-0x0000000000510000-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 528 wrote to memory of 2888	528	2024-06-13_54ea2cfcd587da7d12b842baa24d8030_cryptolocker.exe	89
PID 528 wrote to memory of 2888	528	2024-06-13_54ea2cfcd587da7d12b842baa24d8030_cryptolocker.exe	89
PID 528 wrote to memory of 2888	528	2024-06-13_54ea2cfcd587da7d12b842baa24d8030_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-06-13_54ea2cfcd587da7d12b842baa24d8030_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-13_54ea2cfcd587da7d12b842baa24d8030_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:528
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2888

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 --field-trial-handle=4136,i,3671441404766730751,12082497324212183132,262144 --variations-seed-version --mojo-platform-channel-handle=3972 /prefetch:8
1⤵
PID:5068

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
40KB

MD5
0d6d1dc1a9244c634421c7f78310f7dd

SHA1
a472532ee40fe0f03c408733fda0147707ce2ef5

SHA256
1aab099f1088fd94d76417da47c9182250adfd7ab8ebfd9fa11bd190038dcf42

SHA512
d8f2bf2e5725a5445a088b1278d3296e654a9e732b0404231cb0aad37c216b70e6430041447b600b8069f15ff8248cf8b31ca7324c4ceb24afac075bc96e8126

Download Submit
memory/528-9-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/528-2-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/528-1-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/528-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/528-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2888-19-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2888-21-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/2888-27-0x0000000000730000-0x0000000000736000-memory.dmp

Filesize
24KB

Download
memory/2888-28-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download