a6ec80cea3515d180850ebad6c44ea7daaf269e3c6c1d5a192052265dcbe3150

General

Target

2024-04-27_7a89d7437cf7aa24906a758c62003034_cryptolocker.exe
Size

38KB
MD5

7a89d7437cf7aa24906a758c62003034
SHA1

0927090131df9f694acd0192188e9bdd2e7ad19f
SHA256

a6ec80cea3515d180850ebad6c44ea7daaf269e3c6c1d5a192052265dcbe3150
SHA512

a335b43e806082915904f633a60703b1f7d41727b769b82f7aac607af638c31e10406914daec2a322519ce4d0884bf3e871655d637970e97b6d102d72c89eac1
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYf:qDdFJy3QMOtEvwDpjjWMl7TO

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2480-1-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2540-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/2480-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2480-13-0x00000000005C0000-0x00000000005D0000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2480-1-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2540-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/2480-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2480-13-0x00000000005C0000-0x00000000005D0000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2480-1-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2540-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
C:\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/2480-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2480-13-0x00000000005C0000-0x00000000005D0000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2540 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-04-27_7a89d7437cf7aa24906a758c62003034_cryptolocker.exe

pid process

2480 2024-04-27_7a89d7437cf7aa24906a758c62003034_cryptolocker.exe

pid	process
2540	asih.exe

pid	process
2480	2024-04-27_7a89d7437cf7aa24906a758c62003034_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2480-1-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2540-27-0x0000000000500000-0x0000000000510000-memory.dmp	upx
C:\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral1/memory/2480-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2480-13-0x00000000005C0000-0x00000000005D0000-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:

2024-04-27_7a89d7437cf7aa24906a758c62003034_cryptolocker.exe

description	pid	process	target process
PID 2480 wrote to memory of 2540	2480	2024-04-27_7a89d7437cf7aa24906a758c62003034_cryptolocker.exe	asih.exe
PID 2480 wrote to memory of 2540	2480	2024-04-27_7a89d7437cf7aa24906a758c62003034_cryptolocker.exe	asih.exe
PID 2480 wrote to memory of 2540	2480	2024-04-27_7a89d7437cf7aa24906a758c62003034_cryptolocker.exe	asih.exe
PID 2480 wrote to memory of 2540	2480	2024-04-27_7a89d7437cf7aa24906a758c62003034_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-04-27_7a89d7437cf7aa24906a758c62003034_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-27_7a89d7437cf7aa24906a758c62003034_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2480

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:2540

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

C:\Users\Admin\AppData\Local\Temp\asih.exe
Filesize
38KB

MD5
9d6681ea558df12c7d75b6cd356afe95

SHA1
b40c7940605bfda43aba65ab0ac8785b4eb4e3d1

SHA256
2d8df2665f56a14806838ecf4b300aa570b343597f57104ae05040111ebd2111

SHA512
9dd01c733b0873a0a92123dcffd7d95583ff2e8cf376e99d70b74b59be0c91d89d5f3209d584e97066cd96b656c15c4d73044bdc2348c433d9e1c960c80a73de

Download Submit
memory/2480-0-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2480-2-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2480-1-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2480-3-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/2480-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2480-13-0x00000000005C0000-0x00000000005D0000-memory.dmp

Filesize
64KB

Download
memory/2540-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2540-26-0x0000000000430000-0x0000000000436000-memory.dmp

Filesize
24KB

Download
memory/2540-19-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads