aa281c20cc1b285b3b932410fd390dad02c5552e48c047c201c25db4801ddd9e

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
15/06/2024, 13:42

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General

Target

2024-06-15_0356413005b841a65af895a5ba002ac4_cryptolocker.exe
Size

82KB
MD5

0356413005b841a65af895a5ba002ac4
SHA1

a10b6eb98dc465cd007df953c0b6f384c1e74ac9
SHA256

aa281c20cc1b285b3b932410fd390dad02c5552e48c047c201c25db4801ddd9e
SHA512

a46b39c38dcb4e9e16efeee24b571bf81a3d56229e03f5f80d236b276d8e6bf8e15e34214c62c2df65e62abd2c875496e3adf5c42638585e1bb966ca63a1079b
SSDEEP

1536:zj+soPSMOtEvwDpj4ktBl01hJ0tq1ky7Qw7:zCsanOtEvwDpjm

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/1508-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000900000002351a-13.dat	CryptoLocker_rule2
behavioral2/memory/728-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1508-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/728-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/1508-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000900000002351a-13.dat	CryptoLocker_set1
behavioral2/memory/728-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1508-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/728-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/1508-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000900000002351a-13.dat	UPX
behavioral2/memory/728-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/1508-18-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/728-26-0x0000000000500000-0x0000000000510000-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-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	2024-06-15_0356413005b841a65af895a5ba002ac4_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
728	misid.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1508-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x000900000002351a-13.dat	upx
behavioral2/memory/728-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1508-18-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/728-26-0x0000000000500000-0x0000000000510000-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 1508 wrote to memory of 728	1508	2024-06-15_0356413005b841a65af895a5ba002ac4_cryptolocker.exe	91
PID 1508 wrote to memory of 728	1508	2024-06-15_0356413005b841a65af895a5ba002ac4_cryptolocker.exe	91
PID 1508 wrote to memory of 728	1508	2024-06-15_0356413005b841a65af895a5ba002ac4_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-06-15_0356413005b841a65af895a5ba002ac4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-15_0356413005b841a65af895a5ba002ac4_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1508
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:728

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=4180,i,1999448010053300448,1112699187621658374,262144 --variations-seed-version --mojo-platform-channel-handle=4000 /prefetch:8
1⤵
PID:800

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\misid.exe

Filesize
82KB

MD5
cd4a5aa8aed0525cd3dabb8b9e273ad8

SHA1
53b0e32027c5e0c82cadc40ad9f4db0c914634dc

SHA256
9ae640405c7d770d33f52306d58534eda95dd9c2ce0c5d69eda024025d74508f

SHA512
aee44eea17b35a00049f9df71e93d54ec8074cec1b53dc635cf96aba25d9f307b130a047751d2de1deb5232788389e8caefd4bb2b1a4b5145f4ccfe602af3c00

Download Submit
memory/728-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/728-20-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/728-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1508-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1508-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1508-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1508-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1508-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download