e1e6812104e3dae9371c95772466818e12e18a718b0feec5befd64ed2839b8b2

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
05-04-2024 03:41

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General

Target

2024-04-05_4dcd10213e8d93351c6b627679cc098f_cryptolocker.exe
Size

48KB
MD5

4dcd10213e8d93351c6b627679cc098f
SHA1

f8c860c5d5a958d0d05e3af9d703511541efb16d
SHA256

e1e6812104e3dae9371c95772466818e12e18a718b0feec5befd64ed2839b8b2
SHA512

32ba452c64e917944767aaf5aedd17671261210f6605fad9f04423fbaf30f6c7c008f2562547f864b9dce0826421725ea46369ed8e68ed047a85d3cbcbcfe904
SSDEEP

1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQ6uMcB:BbdDmjr+OtEvwDpjM1

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

resource	yara_rule
behavioral1/memory/2308-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c000000013a3f-11.dat	CryptoLocker_rule2
behavioral1/memory/2308-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1804-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2308-13-0x0000000002BC0000-0x0000000002BD0000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1804-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2308-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2308-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1804-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1804-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 6 IoCs

resource	yara_rule
behavioral1/memory/2308-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000c000000013a3f-11.dat	UPX
behavioral1/memory/2308-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/1804-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2308-13-0x0000000002BC0000-0x0000000002BD0000-memory.dmp	UPX
behavioral1/memory/1804-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
1804	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2308	2024-04-05_4dcd10213e8d93351c6b627679cc098f_cryptolocker.exe

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 2308 wrote to memory of 1804	2308	2024-04-05_4dcd10213e8d93351c6b627679cc098f_cryptolocker.exe	28
PID 2308 wrote to memory of 1804	2308	2024-04-05_4dcd10213e8d93351c6b627679cc098f_cryptolocker.exe	28
PID 2308 wrote to memory of 1804	2308	2024-04-05_4dcd10213e8d93351c6b627679cc098f_cryptolocker.exe	28
PID 2308 wrote to memory of 1804	2308	2024-04-05_4dcd10213e8d93351c6b627679cc098f_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-05_4dcd10213e8d93351c6b627679cc098f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-05_4dcd10213e8d93351c6b627679cc098f_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2308
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1804

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
49KB

MD5
740d93df70c35fc8f7e001c8f6834ab6

SHA1
ba1d56aae30614b68a55ae56ef39ce8315eb2b3f

SHA256
c6e0aefbae2371964eb3ad6fba4b2352d04ea79a64cd3f15a0b7c098a478dd37

SHA512
278583248843a40dfc4ce073ef262da45d7abeb41b40481d3f72a4680972892dc41b07bf1f5bb9e069e5c10d7059ecabd66e82f5080e3445a0898a6d6fe4d9ef

Download Submit
memory/1804-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1804-19-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/1804-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2308-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2308-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2308-3-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/2308-2-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2308-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2308-13-0x0000000002BC0000-0x0000000002BD0000-memory.dmp

Filesize
64KB

Download