c885f4d3f4ee75d5fde18d77a413e02597366dcaa2f597dab95c2a7dbc46bd58

Analysis

max time kernel
88s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
12-02-2024 20:00

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General

Target

2024-02-12_5c3065f93b534a1249dea9a6f9d854a9_cryptolocker.exe
Size

54KB
MD5

5c3065f93b534a1249dea9a6f9d854a9
SHA1

de79f3789661ea38d51955ad89e47f75886c89e1
SHA256

c885f4d3f4ee75d5fde18d77a413e02597366dcaa2f597dab95c2a7dbc46bd58
SHA512

aef34859270befb44b955d6c0998f3cc770be3fdaf23e760f420aeecbae037b5d277afa8c32e8d471a4f8a5f06ac504ff9438593e82eec4a5e76df478c036796
SSDEEP

768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbP/MM0:xj+VGMOtEvwDpjubXMM0

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2632-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
C:\Users\Admin\AppData\Local\Temp\misid.exe	CryptoLocker_rule2
behavioral2/memory/3088-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2632-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3088-55-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2632-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
C:\Users\Admin\AppData\Local\Temp\misid.exe	CryptoLocker_set1
behavioral2/memory/3088-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2632-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3088-55-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2632-0-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
C:\Users\Admin\AppData\Local\Temp\misid.exe	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3088-18-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/2632-17-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3088-55-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

misid.exe2024-02-12_5c3065f93b534a1249dea9a6f9d854a9_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation	misid.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation	2024-02-12_5c3065f93b534a1249dea9a6f9d854a9_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

misid.exe

pid process

3088 misid.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
3088	misid.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-02-12_5c3065f93b534a1249dea9a6f9d854a9_cryptolocker.exe

description	pid	process	target process
PID 2632 wrote to memory of 3088	2632	2024-02-12_5c3065f93b534a1249dea9a6f9d854a9_cryptolocker.exe	misid.exe
PID 2632 wrote to memory of 3088	2632	2024-02-12_5c3065f93b534a1249dea9a6f9d854a9_cryptolocker.exe	misid.exe
PID 2632 wrote to memory of 3088	2632	2024-02-12_5c3065f93b534a1249dea9a6f9d854a9_cryptolocker.exe	misid.exe

C:\Users\Admin\AppData\Local\Temp\2024-02-12_5c3065f93b534a1249dea9a6f9d854a9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_5c3065f93b534a1249dea9a6f9d854a9_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2632

C:\Users\Admin\AppData\Local\Temp\misid.exe
"C:\Users\Admin\AppData\Local\Temp\misid.exe"
2⤵
- Checks computer location settings
- Executes dropped EXE
PID:3088

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\misid.exe
Filesize
54KB

MD5
dd781283f898364d0d052b7948e978bc

SHA1
42bf5bb19f1d27454a7557fb5001d60320df621e

SHA256
7c268e3724fe094eb481b83f4b8f4f6e784aba2e9934c5613ebe21a0c99a7bd8

SHA512
6c57a56c99fc82eb2347f6df043bd4eed7043eadb8e7e9fdf95447feeaf19376e1be15c69c0017277d9ab2c62b40091091df41035432f4d74dfb6ba0da65f2d9

Download Submit
memory/2632-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2632-1-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/2632-2-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/2632-3-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/2632-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3088-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3088-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3088-22-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3088-55-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download