c9fe9f83cc77baf2d8af80b74aebc81918314008c3ee89d82d9ec61259a879de

Analysis

max time kernel
147s
max time network
150s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
07/01/2024, 12:05

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General

Target

2024-01-06_15a5802b969d2454cb05d62742ffefdc_cryptolocker.exe
Size

104KB
MD5

15a5802b969d2454cb05d62742ffefdc
SHA1

c21ee6c71cd2044c61051fd1b17ee76001d7ee7d
SHA256

c9fe9f83cc77baf2d8af80b74aebc81918314008c3ee89d82d9ec61259a879de
SHA512

1da1f39aa966cc1d5874718204218dfa6bd0d6a437d78f8f9767aa093ba9db336562d4b5d48f3aa7737236cf4bcb8e781eae769fc426f6b35ca6e90623de0eff
SSDEEP

1536:P8mnK6QFElP6n+gymddpMOtEvwDpjIHsalRn5iF1j6Gksm:1nK6a+qdOOtEvwDpjm

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2456	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2296	2024-01-06_15a5802b969d2454cb05d62742ffefdc_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2296-5-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/files/0x000c00000001224c-11.dat	upx
behavioral1/memory/2456-16-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/memory/2456-24-0x0000000000500000-0x000000000050F311-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

description	pid	Process	procid_target
PID 2296 wrote to memory of 2456	2296	2024-01-06_15a5802b969d2454cb05d62742ffefdc_cryptolocker.exe	14
PID 2296 wrote to memory of 2456	2296	2024-01-06_15a5802b969d2454cb05d62742ffefdc_cryptolocker.exe	14
PID 2296 wrote to memory of 2456	2296	2024-01-06_15a5802b969d2454cb05d62742ffefdc_cryptolocker.exe	14
PID 2296 wrote to memory of 2456	2296	2024-01-06_15a5802b969d2454cb05d62742ffefdc_cryptolocker.exe	14

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
1⤵
- Executes dropped EXE
PID:2456

C:\Users\Admin\AppData\Local\Temp\2024-01-06_15a5802b969d2454cb05d62742ffefdc_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-06_15a5802b969d2454cb05d62742ffefdc_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2296

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\asih.exe

Filesize
104KB

MD5
a31f3cb71820d87374ad3582acae8df5

SHA1
a288ede458d068df1cc7f0adf976068d541cdc53

SHA256
e0c5635f7cf008721465b44817fd63640eb1a1ff7836a76695570cf4255dce74

SHA512
07a9894caa2ad2076a992e1b13ce0bd434bfd0781a3082fdc6d395438ad574c58f4c2a9643ee673fffdcfef32f4e58cb7bf3caf42db171685a0dea7183ad06f7

Download Submit
memory/2296-5-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2296-1-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2296-7-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2296-0-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2456-17-0x00000000002A0000-0x00000000002A6000-memory.dmp

Filesize
24KB

Download
memory/2456-16-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2456-24-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download