e6ef3988bb5682e18a2156b2cd08a38ffe818016fcf9224314b87228ae1d5f89

Analysis

max time kernel
149s
max time network
153s
platform
windows7_x64
resource
win7-20240611-en
resource tags

arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system
submitted
14/06/2024, 14:39

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General

Target

2024-06-14_7a66e2af046ef0e81a13c2b1921754ac_cryptolocker.exe
Size

41KB
MD5

7a66e2af046ef0e81a13c2b1921754ac
SHA1

c4ca74282d198c4b2918e9447884b43de4c20e96
SHA256

e6ef3988bb5682e18a2156b2cd08a38ffe818016fcf9224314b87228ae1d5f89
SHA512

1c378f51deef5fb270fc46a80030a0ce1562862514ac2a141c75b2baaef9a1863c4af68c720765b2970aca2379562888b9b2525fa2940cecbfdde8cecebc9770
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYljQ:qDdFJy3QMOtEvwDpjjWMl7T6E

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/1704-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000d000000013a84-11.dat	CryptoLocker_rule2
behavioral1/memory/1704-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2512-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/1704-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000d000000013a84-11.dat	CryptoLocker_set1
behavioral1/memory/1704-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2512-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/1704-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000d000000013a84-11.dat	UPX
behavioral1/memory/1704-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2512-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2512	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1704	2024-06-14_7a66e2af046ef0e81a13c2b1921754ac_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1704-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000d000000013a84-11.dat	upx
behavioral1/memory/1704-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2512-26-0x0000000000500000-0x0000000000510000-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

description	pid	Process	procid_target
PID 1704 wrote to memory of 2512	1704	2024-06-14_7a66e2af046ef0e81a13c2b1921754ac_cryptolocker.exe	28
PID 1704 wrote to memory of 2512	1704	2024-06-14_7a66e2af046ef0e81a13c2b1921754ac_cryptolocker.exe	28
PID 1704 wrote to memory of 2512	1704	2024-06-14_7a66e2af046ef0e81a13c2b1921754ac_cryptolocker.exe	28
PID 1704 wrote to memory of 2512	1704	2024-06-14_7a66e2af046ef0e81a13c2b1921754ac_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-14_7a66e2af046ef0e81a13c2b1921754ac_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-14_7a66e2af046ef0e81a13c2b1921754ac_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1704
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2512

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
42KB

MD5
7c1a608aa7fdf44672524b256e2ad81b

SHA1
cda1f75f15e7e965774f83ec248209cb1a45e4f2

SHA256
567d605778e5829a8af0ac23f592b05a8a20d926b0e8bc0d410ec0bd08aea946

SHA512
a73c686e9d0a4efff337579de8007e11b4bcfba0d01c6205bac05d654bd5258c1ad7d7f67cc34d6ce8b1a4092a196c61b7203e9f683f3516dab93bfb2aa888cb

Download Submit
memory/1704-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1704-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1704-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1704-2-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/1704-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2512-25-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/2512-18-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/2512-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download