73f59326ba3935dfe37b0e00beeac0f21d952afd441f3604973cc574ba227de1

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
30/04/2024, 02:52

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General

Target

2024-04-30_9ddd3e3161e4242082410e912fd28df0_cryptolocker.exe
Size

60KB
MD5

9ddd3e3161e4242082410e912fd28df0
SHA1

c78cb187408b0cfb68c47baa8a8744521415cb85
SHA256

73f59326ba3935dfe37b0e00beeac0f21d952afd441f3604973cc574ba227de1
SHA512

df7660effabb4bd45219add5860eb5fcc24ba785134d957fbc623d478fcdcad37878f732a44923f29e92912e3702e189463514ec138323c0caef4923c009630e
SSDEEP

768:z6LsoEEeegiZPvEhHSG+gzum/kLyMro2GtOOtEvwDpj/YMLam5app6:z6QFElP6n+gKmddpMOtEvwDpj9aYaq

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2184-8-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000d00000001342e-11.dat	CryptoLocker_rule2
behavioral1/memory/2184-12-0x00000000005C0000-0x00000000005D0000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3052-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3052-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2184-8-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000d00000001342e-11.dat	CryptoLocker_set1
behavioral1/memory/2184-12-0x00000000005C0000-0x00000000005D0000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3052-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3052-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2184-8-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000d00000001342e-11.dat	UPX
behavioral1/memory/2184-12-0x00000000005C0000-0x00000000005D0000-memory.dmp	UPX
behavioral1/memory/3052-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/3052-25-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
3052	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2184	2024-04-30_9ddd3e3161e4242082410e912fd28df0_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2184-8-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000d00000001342e-11.dat	upx
behavioral1/memory/2184-12-0x00000000005C0000-0x00000000005D0000-memory.dmp	upx
behavioral1/memory/3052-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/3052-25-0x0000000000500000-0x0000000000510000-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 2184 wrote to memory of 3052	2184	2024-04-30_9ddd3e3161e4242082410e912fd28df0_cryptolocker.exe	28
PID 2184 wrote to memory of 3052	2184	2024-04-30_9ddd3e3161e4242082410e912fd28df0_cryptolocker.exe	28
PID 2184 wrote to memory of 3052	2184	2024-04-30_9ddd3e3161e4242082410e912fd28df0_cryptolocker.exe	28
PID 2184 wrote to memory of 3052	2184	2024-04-30_9ddd3e3161e4242082410e912fd28df0_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-30_9ddd3e3161e4242082410e912fd28df0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-30_9ddd3e3161e4242082410e912fd28df0_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2184
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3052

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
60KB

MD5
9fa6fc3a2ed81476de71ea41c00cb137

SHA1
0259bff70a8c3d195cbbd33656c834896a762061

SHA256
da078cbb24807e5051ba77978ce6ed7cbcfbaff2764356c6f1b6172e1e6a04f5

SHA512
60cc56d1e0563b7bb0f41ffbc07a1eb928665f4809fbdc296682be1a2b5d7d934a909f2e5da7adf3a13707f2d51621f47532d79b04030649da282616debdb199

Download Submit
memory/2184-0-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2184-1-0x00000000004B0000-0x00000000004B6000-memory.dmp

Filesize
24KB

Download
memory/2184-8-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2184-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2184-12-0x00000000005C0000-0x00000000005D0000-memory.dmp

Filesize
64KB

Download
memory/3052-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3052-18-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/3052-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download