fdbbda0fb2a69cf209a9386a1a9a0ac8f616ffb8d6f42053bc4a32714e90ef11

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
27-04-2024 22:32

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General

Target

2024-04-27_61cfe6e4b4100318bc7b63453eee5222_cryptolocker.exe
Size

63KB
MD5

61cfe6e4b4100318bc7b63453eee5222
SHA1

b7eba4ab5520d30a07e705b022a4dc9ddb52b9d8
SHA256

fdbbda0fb2a69cf209a9386a1a9a0ac8f616ffb8d6f42053bc4a32714e90ef11
SHA512

e321bc87edcfa8dc9bd403f16bf007512f6e6fafc36d3b3282bce3185d3d19cf705c3e567a63107fa15a16c73f32f675c830f951fade63bc135d19b2b9955334
SSDEEP

1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMTIk:TCjsIOtEvwDpj5HE/OUHnSMG

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1672-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
C:\Users\Admin\AppData\Local\Temp\misid.exe	CryptoLocker_rule2
behavioral2/memory/1056-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1672-18-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1056-27-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1672-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
C:\Users\Admin\AppData\Local\Temp\misid.exe	CryptoLocker_set1
behavioral2/memory/1056-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1672-18-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1056-27-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1

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

Processes:

2024-04-27_61cfe6e4b4100318bc7b63453eee5222_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-877519540-908060166-1852957295-1000\Control Panel\International\Geo\Nation	2024-04-27_61cfe6e4b4100318bc7b63453eee5222_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

misid.exe

pid process

1056 misid.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1056	misid.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-04-27_61cfe6e4b4100318bc7b63453eee5222_cryptolocker.exe

description	pid	process	target process
PID 1672 wrote to memory of 1056	1672	2024-04-27_61cfe6e4b4100318bc7b63453eee5222_cryptolocker.exe	misid.exe
PID 1672 wrote to memory of 1056	1672	2024-04-27_61cfe6e4b4100318bc7b63453eee5222_cryptolocker.exe	misid.exe
PID 1672 wrote to memory of 1056	1672	2024-04-27_61cfe6e4b4100318bc7b63453eee5222_cryptolocker.exe	misid.exe

C:\Users\Admin\AppData\Local\Temp\2024-04-27_61cfe6e4b4100318bc7b63453eee5222_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-27_61cfe6e4b4100318bc7b63453eee5222_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1672

C:\Users\Admin\AppData\Local\Temp\misid.exe
"C:\Users\Admin\AppData\Local\Temp\misid.exe"
2⤵
- Executes dropped EXE
PID:1056

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
63KB

MD5
c782ab90a9396376006d5ade8cafef1a

SHA1
8cb69284b73aa98821a890c7a5876fae3660c1cb

SHA256
c98f8221289a57cab148ea7cb629e0c31ff4d78970825f1a33a0d2dbb9145a9e

SHA512
00e42a490f8160b933ffb39a5e703afd6e9e6c7d653e2ed11b668e1d1502111d3926c4faa78bcb362e331e89de0fbfb18fcd6e59734d1d5c9e2ba3d7dd2e78cb

Download Submit
memory/1056-17-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/1056-26-0x0000000000730000-0x0000000000736000-memory.dmp

Filesize
24KB

Download
memory/1056-20-0x0000000001FF0000-0x0000000001FF6000-memory.dmp

Filesize
24KB

Download
memory/1056-27-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/1672-0-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/1672-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1672-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1672-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1672-18-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download