d531dbfd620cb0d8b743d99466da8d041c2d8b2a37e2880f81959da10446169e

Analysis

max time kernel
150s
max time network
154s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
24-05-2024 04:10

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General

Target

2024-05-24_e85f1f2aeac2b6ce04ced360de489250_cryptolocker.exe
Size

73KB
MD5

e85f1f2aeac2b6ce04ced360de489250
SHA1

9d72ff1d1fa6a5b214bfd76ca410f79fb8d6f463
SHA256

d531dbfd620cb0d8b743d99466da8d041c2d8b2a37e2880f81959da10446169e
SHA512

6a5ef7dace4738c7b895b3f07b269cd1f40e9cec5b50d1d83911961f370bfb3c649bd7e7359027999695eb7432e4ea9529042d5a61beb01e46af8780c4828270
SSDEEP

1536:nj+4zs2cPVhlMOtEvwDpj4H8u8rZVTs95K:C4Q2c94OtEvwDpj4H8zR

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2236-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\misid.exe	CryptoLocker_rule2
behavioral1/memory/2236-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2812-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2812-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2236-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2812-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2236-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\misid.exe	UPX
behavioral1/memory/2236-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2812-18-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2812-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

misid.exe

pid process

2812 misid.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-24_e85f1f2aeac2b6ce04ced360de489250_cryptolocker.exe

pid process

2236 2024-05-24_e85f1f2aeac2b6ce04ced360de489250_cryptolocker.exe

pid	process
2812	misid.exe

pid	process
2236	2024-05-24_e85f1f2aeac2b6ce04ced360de489250_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2236-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
\Users\Admin\AppData\Local\Temp\misid.exe	upx
behavioral1/memory/2236-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2812-18-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2812-27-0x0000000000500000-0x0000000000510000-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 4 IoCs

Processes:

2024-05-24_e85f1f2aeac2b6ce04ced360de489250_cryptolocker.exe

description	pid	process	target process
PID 2236 wrote to memory of 2812	2236	2024-05-24_e85f1f2aeac2b6ce04ced360de489250_cryptolocker.exe	misid.exe
PID 2236 wrote to memory of 2812	2236	2024-05-24_e85f1f2aeac2b6ce04ced360de489250_cryptolocker.exe	misid.exe
PID 2236 wrote to memory of 2812	2236	2024-05-24_e85f1f2aeac2b6ce04ced360de489250_cryptolocker.exe	misid.exe
PID 2236 wrote to memory of 2812	2236	2024-05-24_e85f1f2aeac2b6ce04ced360de489250_cryptolocker.exe	misid.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-24_e85f1f2aeac2b6ce04ced360de489250_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-24_e85f1f2aeac2b6ce04ced360de489250_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2236

C:\Users\Admin\AppData\Local\Temp\misid.exe
"C:\Users\Admin\AppData\Local\Temp\misid.exe"
2⤵
- Executes dropped EXE
PID:2812

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\misid.exe
Filesize
73KB

MD5
d58d0cb4f4e84ac8ba4e5f903824151b

SHA1
1a20213b01cbe7c12ebf5ece8cbaa4487ff11073

SHA256
a3986bb4fedff444105d3b11d4decb6a6b3088390f911a265ff9f384da4cc8ef

SHA512
867664baaf631148849dd35934016d5e3a84214fe494826c86edfbd5f2597b6ad5fff2a71999f6a5c7a563d998fd08b7390a6d5c6adbfa86aa3f8799eb579566

Download Submit
memory/2236-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2236-8-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2236-2-0x0000000000350000-0x0000000000356000-memory.dmp

Filesize
24KB

Download
memory/2236-1-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2236-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2236-14-0x0000000002800000-0x0000000002810000-memory.dmp

Filesize
64KB

Download
memory/2812-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2812-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download