e431612cfdc0fc44a910c6265ed78738208ff4f3a449c3600553c687099045a6

Analysis

max time kernel
150s
max time network
154s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
27/05/2024, 19:26

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General

Target

2024-05-27_1ccd3ef94200831188acb82d2cd7d8a2_cryptolocker.exe
Size

81KB
MD5

1ccd3ef94200831188acb82d2cd7d8a2
SHA1

9b9bf0828674fc6bd232c58c43a03664cea04b03
SHA256

e431612cfdc0fc44a910c6265ed78738208ff4f3a449c3600553c687099045a6
SHA512

6d4238267345a1394f7b784983510ccce256df6a3833c40ce724b121aae4f7bfa467e73795e93deba08c67d3342269b7210e011a71a128a0c9444e5fef019787
SSDEEP

1536:zj+soPSMOtEvwDpj4ktBl01hJ0tq1ky7QpSxO:zCsanOtEvwDpjv

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2124-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000a0000000122ec-11.dat	CryptoLocker_rule2
behavioral1/memory/2124-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2616-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2616-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2124-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000a0000000122ec-11.dat	CryptoLocker_set1
behavioral1/memory/2124-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2616-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2616-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2124-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000a0000000122ec-11.dat	UPX
behavioral1/memory/2124-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2616-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2616-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2616	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2124	2024-05-27_1ccd3ef94200831188acb82d2cd7d8a2_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2124-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000a0000000122ec-11.dat	upx
behavioral1/memory/2124-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2616-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2616-26-0x0000000000500000-0x0000000000510000-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 2124 wrote to memory of 2616	2124	2024-05-27_1ccd3ef94200831188acb82d2cd7d8a2_cryptolocker.exe	28
PID 2124 wrote to memory of 2616	2124	2024-05-27_1ccd3ef94200831188acb82d2cd7d8a2_cryptolocker.exe	28
PID 2124 wrote to memory of 2616	2124	2024-05-27_1ccd3ef94200831188acb82d2cd7d8a2_cryptolocker.exe	28
PID 2124 wrote to memory of 2616	2124	2024-05-27_1ccd3ef94200831188acb82d2cd7d8a2_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-27_1ccd3ef94200831188acb82d2cd7d8a2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-27_1ccd3ef94200831188acb82d2cd7d8a2_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2124
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2616

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\misid.exe

Filesize
81KB

MD5
d69208a1a4941b7de42363c6c3d1c9c6

SHA1
68c33442d3a27f750bda946e6442cadd2b407abe

SHA256
26e0bae764ed65d611453547ab601ec648a0d6d2fc2c0f61c50ac60b5eb6aa57

SHA512
8b666808fbc3d6cb4a944dd080d58cb0f6dbc150ca660d223db851a674a834653b6a087e71be40d4b6f712353fc59aa59d63bc2721fab24383d3e7a77d1f6f44

Download Submit
memory/2124-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2124-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2124-2-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2124-3-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2124-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2616-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2616-18-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2616-25-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2616-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download