7a3b059fc8eb158f4cac89ae676f5148166345b9114077244f0025c8926dc197

Analysis

max time kernel
149s
max time network
154s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
11-05-2024 18:27

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General

Target

2024-05-11_2e586a6e2dfb922cf8478272bbb7f393_cryptolocker.exe
Size

23KB
MD5

2e586a6e2dfb922cf8478272bbb7f393
SHA1

2b1f3570065c8e2334e853a3d7d99645970156b3
SHA256

7a3b059fc8eb158f4cac89ae676f5148166345b9114077244f0025c8926dc197
SHA512

becd3c05616d9e3640ad08ea0ef947d581ba587a7582968ecbf046eb815e492461483053873d3e17b7ce45c33ff4ef16abc988fea8287a328f720b42b4d275fe
SSDEEP

384:bVCPwFRuFn65arz1ZhdaXFXSCVQTLfjDp6HjZ:bVCPwFRo6CpwXFXSqQXfjAl

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2208-0-0x0000000008000000-0x000000000800E000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000a0000000122ec-11.dat	CryptoLocker_rule2
behavioral1/memory/2208-16-0x0000000008000000-0x000000000800E000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2192-26-0x0000000008000000-0x000000000800E000-memory.dmp	CryptoLocker_rule2

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/2208-0-0x0000000008000000-0x000000000800E000-memory.dmp	UPX
behavioral1/files/0x000a0000000122ec-11.dat	UPX
behavioral1/memory/2208-16-0x0000000008000000-0x000000000800E000-memory.dmp	UPX
behavioral1/memory/2192-26-0x0000000008000000-0x000000000800E000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2192	hasfj.exe

Loads dropped DLL 1 IoCs

pid	Process
2208	2024-05-11_2e586a6e2dfb922cf8478272bbb7f393_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2208-0-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral1/files/0x000a0000000122ec-11.dat	upx
behavioral1/memory/2208-16-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral1/memory/2192-26-0x0000000008000000-0x000000000800E000-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 2208 wrote to memory of 2192	2208	2024-05-11_2e586a6e2dfb922cf8478272bbb7f393_cryptolocker.exe	28
PID 2208 wrote to memory of 2192	2208	2024-05-11_2e586a6e2dfb922cf8478272bbb7f393_cryptolocker.exe	28
PID 2208 wrote to memory of 2192	2208	2024-05-11_2e586a6e2dfb922cf8478272bbb7f393_cryptolocker.exe	28
PID 2208 wrote to memory of 2192	2208	2024-05-11_2e586a6e2dfb922cf8478272bbb7f393_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-11_2e586a6e2dfb922cf8478272bbb7f393_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-11_2e586a6e2dfb922cf8478272bbb7f393_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2208
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2192

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\hasfj.exe

Filesize
24KB

MD5
1c3c76c1a8f0072450344a3941ef77e0

SHA1
d3f8651c5740342f1b9d8388cb74db6b695e0a10

SHA256
92bc83f348f4172460a94d6e45625724905ca25fcad9d301fee7368669659117

SHA512
75617bb4842ae88e0ee883d884a6939e343d53fac03f00295681778b1967f79cbeaa7f6a4bd4004753ca35903b8e82a5760d28c00fc7dd3e8a4a52a097d14989

Download Submit
memory/2192-25-0x0000000000370000-0x0000000000376000-memory.dmp

Filesize
24KB

Download
memory/2192-18-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/2192-26-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/2208-0-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/2208-2-0x0000000001CB0000-0x0000000001CB6000-memory.dmp

Filesize
24KB

Download
memory/2208-9-0x0000000001CA0000-0x0000000001CA6000-memory.dmp

Filesize
24KB

Download
memory/2208-1-0x0000000001CA0000-0x0000000001CA6000-memory.dmp

Filesize
24KB

Download
memory/2208-16-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download