f658b27c6341221442d65f4f1c14f09bcdcd40c73c5e81b863773486468765f0

General

Target

2024-05-21_6e16802668d1dd95e21d6a65f65be195_cryptolocker.exe
Size

59KB
MD5

6e16802668d1dd95e21d6a65f65be195
SHA1

2fd04914abd2bb1cadd248e93bf91034dbe3ddd9
SHA256

f658b27c6341221442d65f4f1c14f09bcdcd40c73c5e81b863773486468765f0
SHA512

89f330821776df3fb35c21a235eeeb080e1d1411a61565965b529d027ef18166e0e6c33ab4d5860a02b6f946f330aa6a91f0defd38df35f8818ae028b73a611a
SSDEEP

768:H6LsoEEeegiZPvEhHSG+gk5NQXtckstOOtEvwDpjhBaD3TUogs/VXpAPj8:H6QFElP6n+gou9cvMOtEvwDpjCpVXJ

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2444-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/2444-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1252-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1252-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2444-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/2444-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1252-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1252-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2444-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/2444-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/1252-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/1252-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

1252 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-21_6e16802668d1dd95e21d6a65f65be195_cryptolocker.exe

pid process

2444 2024-05-21_6e16802668d1dd95e21d6a65f65be195_cryptolocker.exe

pid	process
1252	asih.exe

pid	process
2444	2024-05-21_6e16802668d1dd95e21d6a65f65be195_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2444-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral1/memory/2444-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1252-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1252-26-0x0000000000500000-0x0000000000510000-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 4 IoCs

Processes:

2024-05-21_6e16802668d1dd95e21d6a65f65be195_cryptolocker.exe

description	pid	process	target process
PID 2444 wrote to memory of 1252	2444	2024-05-21_6e16802668d1dd95e21d6a65f65be195_cryptolocker.exe	asih.exe
PID 2444 wrote to memory of 1252	2444	2024-05-21_6e16802668d1dd95e21d6a65f65be195_cryptolocker.exe	asih.exe
PID 2444 wrote to memory of 1252	2444	2024-05-21_6e16802668d1dd95e21d6a65f65be195_cryptolocker.exe	asih.exe
PID 2444 wrote to memory of 1252	2444	2024-05-21_6e16802668d1dd95e21d6a65f65be195_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-21_6e16802668d1dd95e21d6a65f65be195_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-21_6e16802668d1dd95e21d6a65f65be195_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2444

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:1252

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

\Users\Admin\AppData\Local\Temp\asih.exe
Filesize
59KB

MD5
cf7050c7360a4b0278ccc6e83a8dc606

SHA1
e3bdc1018b3a7eb908eaa015c80172af96c15b3a

SHA256
4b8bf342eab71808995746a7a61cee98c1a3c0cb113e8ed92de85d4abfeef442

SHA512
113b407101c00448126813226f1b22772b5a83deff5c69825ce9a23cfc9ed1f686447d2547fc3950a9f495212b17a079aaf57ad12b9f7166ee4b30466489dcb5

Download Submit
memory/1252-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1252-18-0x00000000002A0000-0x00000000002A6000-memory.dmp

Filesize
24KB

Download
memory/1252-25-0x00000000001E0000-0x00000000001E6000-memory.dmp

Filesize
24KB

Download
memory/1252-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2444-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2444-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2444-2-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2444-3-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/2444-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads