e418916c32890325e375b16e8d6684edde99fde84db496f59cfdf9d84733aeb2

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
27-04-2024 22:33

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General

Target

2024-04-27_65458a97bac175a8c43ceb91584c6b83_cryptolocker.exe
Size

87KB
MD5

65458a97bac175a8c43ceb91584c6b83
SHA1

b38e339e3318d60233b40b1acf753da64df9b05d
SHA256

e418916c32890325e375b16e8d6684edde99fde84db496f59cfdf9d84733aeb2
SHA512

e1458321b80be6559afc231adb4667d7b6339602d9724babd1a6f7bf3e0afd2ed72b09317bec2f97fee932c0be0cc26e87def5ccd9f913ec679a25b6e59901bf
SSDEEP

768:qkmnjFom/kLyMro2GtOOtEvwDpjeY10Y/YMsvlMdwPK80GQuchoIgtIODw:qkmnpomddpMOtEvwDpjJGYQbN/PKwMgK

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2896-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/2896-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3016-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2896-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/2896-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3016-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2896-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/2896-15-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/3016-26-0x0000000000500000-0x000000000050F000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

3016 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-04-27_65458a97bac175a8c43ceb91584c6b83_cryptolocker.exe

pid process

2896 2024-04-27_65458a97bac175a8c43ceb91584c6b83_cryptolocker.exe

pid	process
3016	asih.exe

pid	process
2896	2024-04-27_65458a97bac175a8c43ceb91584c6b83_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2896-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral1/memory/2896-15-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/3016-26-0x0000000000500000-0x000000000050F000-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_65458a97bac175a8c43ceb91584c6b83_cryptolocker.exe

description	pid	process	target process
PID 2896 wrote to memory of 3016	2896	2024-04-27_65458a97bac175a8c43ceb91584c6b83_cryptolocker.exe	asih.exe
PID 2896 wrote to memory of 3016	2896	2024-04-27_65458a97bac175a8c43ceb91584c6b83_cryptolocker.exe	asih.exe
PID 2896 wrote to memory of 3016	2896	2024-04-27_65458a97bac175a8c43ceb91584c6b83_cryptolocker.exe	asih.exe
PID 2896 wrote to memory of 3016	2896	2024-04-27_65458a97bac175a8c43ceb91584c6b83_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-04-27_65458a97bac175a8c43ceb91584c6b83_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-27_65458a97bac175a8c43ceb91584c6b83_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2896

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:3016

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\asih.exe
Filesize
87KB

MD5
f61df05db662684888151375a0cf2382

SHA1
74f26530c1c23a55a9ec4745904d6b19bb7b3b1d

SHA256
688928a0e43c7c76925d234d2be8181268f9eb2b6c3113c10dfb0ea99753f996

SHA512
36da7ca7f7e2bd7d4016f68da14862c107ce7edec594df6ac7e88950211fe7d33b2fe3c5998a03493022764f850603e735d2fbf8f02fdc4563b0e91c933c3d3b

Download Submit
memory/2896-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2896-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2896-2-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2896-9-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2896-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3016-18-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/3016-25-0x0000000000430000-0x0000000000436000-memory.dmp

Filesize
24KB

Download
memory/3016-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download