ae90896ec56f1870da6732c468eb7c723d8913d3a3de6eb710a259670eb23ccb

Analysis

max time kernel
150s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
18/03/2024, 23:26

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General

Target

2024-03-18_30f05bcda962983978e77992e3678b8c_cryptolocker.exe
Size

58KB
MD5

30f05bcda962983978e77992e3678b8c
SHA1

978a71064b0989978696e85b9eedac24b387e6d2
SHA256

ae90896ec56f1870da6732c468eb7c723d8913d3a3de6eb710a259670eb23ccb
SHA512

a8dfca61629d04902925414ea6d078b60de49ca04cea654dde895103c77622b21ebe34249e205c32eb07f8050214998dbcec0f608c168fc13c300c57fc86e9ed
SSDEEP

768:z6LsoEEeegiZPvEhHSG+gzum/kLyMro2GtOOtEvwDpj/YMLam5appB:z6QFElP6n+gKmddpMOtEvwDpj9aYaR

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/2536-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000001db2a-13.dat	CryptoLocker_rule2
behavioral2/memory/2536-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3380-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/2536-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000800000001db2a-13.dat	CryptoLocker_set1
behavioral2/memory/2536-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3380-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/2536-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000800000001db2a-13.dat	UPX
behavioral2/memory/2536-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/3380-26-0x0000000000500000-0x0000000000510000-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-1-5-21-1904519900-954640453-4250331663-1000\Control Panel\International\Geo\Nation	2024-03-18_30f05bcda962983978e77992e3678b8c_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3380	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2536-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x000800000001db2a-13.dat	upx
behavioral2/memory/2536-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/3380-26-0x0000000000500000-0x0000000000510000-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 2536 wrote to memory of 3380	2536	2024-03-18_30f05bcda962983978e77992e3678b8c_cryptolocker.exe	97
PID 2536 wrote to memory of 3380	2536	2024-03-18_30f05bcda962983978e77992e3678b8c_cryptolocker.exe	97
PID 2536 wrote to memory of 3380	2536	2024-03-18_30f05bcda962983978e77992e3678b8c_cryptolocker.exe	97

C:\Users\Admin\AppData\Local\Temp\2024-03-18_30f05bcda962983978e77992e3678b8c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-18_30f05bcda962983978e77992e3678b8c_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2536
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3380

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=3268 --field-trial-handle=2588,i,14229658658073991926,6938034815163866135,262144 --variations-seed-version /prefetch:8
1⤵
PID:1172

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
58KB

MD5
9cbf36c8d624e7d35156fc78c28737be

SHA1
6c44da4b8e869b87d82dc8d444e77ff61748a86c

SHA256
f83a5784288d91acfa47ed724048013b5531c77da746fcb6dfc80476486c605f

SHA512
fd555af44b4be66f53465a3e5d7fea7a7b259cb9f59ce1e6a08a171da5abcc9aaa8dac23a11513d9d7fd373eae91476ad8c50815bd6eee2a8a3006d57cc919f6

Download Submit
memory/2536-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2536-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/2536-2-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/2536-3-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/2536-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3380-20-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/3380-19-0x0000000000730000-0x0000000000736000-memory.dmp

Filesize
24KB

Download
memory/3380-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download