d86743332bb087565a4f743e4eea4c2ec48bf5169c9bfd0e553785f0d2ec9777

Analysis

max time kernel
149s
max time network
156s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
02/05/2024, 06:03

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General

Target

2024-05-02_da0a14f18ecc3890a67c8ba65f8b0c67_cryptolocker.exe
Size

23KB
MD5

da0a14f18ecc3890a67c8ba65f8b0c67
SHA1

2627efc53f73f59658bde998459444fa6d80a06a
SHA256

d86743332bb087565a4f743e4eea4c2ec48bf5169c9bfd0e553785f0d2ec9777
SHA512

644f57f322c1198532123ebdc552f459a3416fb7fb1f40f7c62133e305b9e79b86296b94d42bcf4ac68b8a5d82110b53c398e8864f51b74e42da15cf4e78e2ae
SSDEEP

384:bVCPwFRuFn65arz1ZhdaXFXSCVQTLfjDp6Hje:bVCPwFRo6CpwXFXSqQXfjAK

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2212-0-0x0000000008000000-0x000000000800E000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x0025000000014ec4-11.dat	CryptoLocker_rule2
behavioral1/memory/2212-16-0x0000000008000000-0x000000000800E000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2944-17-0x0000000008000000-0x000000000800E000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2944-27-0x0000000008000000-0x000000000800E000-memory.dmp	CryptoLocker_rule2

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2212-0-0x0000000008000000-0x000000000800E000-memory.dmp	UPX
behavioral1/files/0x0025000000014ec4-11.dat	UPX
behavioral1/memory/2212-16-0x0000000008000000-0x000000000800E000-memory.dmp	UPX
behavioral1/memory/2944-17-0x0000000008000000-0x000000000800E000-memory.dmp	UPX
behavioral1/memory/2944-27-0x0000000008000000-0x000000000800E000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2944	hasfj.exe

Loads dropped DLL 1 IoCs

pid	Process
2212	2024-05-02_da0a14f18ecc3890a67c8ba65f8b0c67_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2212-0-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral1/files/0x0025000000014ec4-11.dat	upx
behavioral1/memory/2212-16-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral1/memory/2944-17-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral1/memory/2944-27-0x0000000008000000-0x000000000800E000-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 2212 wrote to memory of 2944	2212	2024-05-02_da0a14f18ecc3890a67c8ba65f8b0c67_cryptolocker.exe	28
PID 2212 wrote to memory of 2944	2212	2024-05-02_da0a14f18ecc3890a67c8ba65f8b0c67_cryptolocker.exe	28
PID 2212 wrote to memory of 2944	2212	2024-05-02_da0a14f18ecc3890a67c8ba65f8b0c67_cryptolocker.exe	28
PID 2212 wrote to memory of 2944	2212	2024-05-02_da0a14f18ecc3890a67c8ba65f8b0c67_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-02_da0a14f18ecc3890a67c8ba65f8b0c67_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-02_da0a14f18ecc3890a67c8ba65f8b0c67_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2212
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2944

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
23KB

MD5
6719eaef29bd04681337bcdc91505285

SHA1
b8eaec32561e1f80dbac3de9c02ae8c846f5e520

SHA256
4c0b6f94e8640463f27d7d22cb064375f60948dc0a55746c42401d9f50ac5e8b

SHA512
4a5ab613a5d25b304d0fc91048105a57f69576b0d56a3dfc8e13abc313d426f19b2d33021284251e5f3f132e4e364cfaae1086fb63cbf879300f0950f409f3ee

Download Submit
memory/2212-0-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/2212-1-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/2212-2-0x00000000004B0000-0x00000000004B6000-memory.dmp

Filesize
24KB

Download
memory/2212-9-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/2212-16-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/2944-17-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/2944-19-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/2944-26-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/2944-27-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download