808186056be10c671d8340e305dcb86d211f49409f33ad1ee9d2f1dbeafa673f

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
17/02/2024, 18:23

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General

Target

2024-02-17_0aa41724294153a61cc3d9b0356ae46a_cryptolocker.exe
Size

57KB
MD5

0aa41724294153a61cc3d9b0356ae46a
SHA1

42e7733df5afba11a9b444ebf2ba530a2a801a3c
SHA256

808186056be10c671d8340e305dcb86d211f49409f33ad1ee9d2f1dbeafa673f
SHA512

371cc223f525bc38917648618c7823342cb62994f3fc20d6107d8f74d7affed30678f1a63ba7293717b6fbc31afeab6f646a34a47a17548d2454b6b0c0e2a722
SSDEEP

768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZgBh8i6g7Goi20PbiA:xj+VGMOtEvwDpjubEgV20DiA

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/2980-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000c00000002315d-13.dat	CryptoLocker_rule2
behavioral2/memory/640-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2980-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/640-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/2980-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000c00000002315d-13.dat	CryptoLocker_set1
behavioral2/memory/640-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2980-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/640-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral2/memory/2980-0-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000c00000002315d-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/640-18-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/2980-17-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/640-27-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress

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-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation	2024-02-17_0aa41724294153a61cc3d9b0356ae46a_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
640	misid.exe

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 2980 wrote to memory of 640	2980	2024-02-17_0aa41724294153a61cc3d9b0356ae46a_cryptolocker.exe	85
PID 2980 wrote to memory of 640	2980	2024-02-17_0aa41724294153a61cc3d9b0356ae46a_cryptolocker.exe	85
PID 2980 wrote to memory of 640	2980	2024-02-17_0aa41724294153a61cc3d9b0356ae46a_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-17_0aa41724294153a61cc3d9b0356ae46a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-17_0aa41724294153a61cc3d9b0356ae46a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2980
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:640

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
57KB

MD5
9c4eb8e22edf340fca531822e42f0f8d

SHA1
1da549f4aed79e7416e083de5776a3c4cec46c81

SHA256
bb79995a134f49074c3e039bbb51953a9dead6389b83bd711bd56f2a0078151c

SHA512
cb94edbf3b443e6225608bb6425babefe63f8f5242390aa8e91eb1d0f4cc71a0bf706858e3d64056b17d6a296ce96065c562ea4d545d523815544e2232346499

Download Submit
memory/640-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/640-20-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/640-22-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/640-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2980-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2980-1-0x0000000000640000-0x0000000000646000-memory.dmp

Filesize
24KB

Download
memory/2980-2-0x0000000000640000-0x0000000000646000-memory.dmp

Filesize
24KB

Download
memory/2980-3-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/2980-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download