be3fb3ba42ddb93face7977a6e01c293dfad8a74c33d77209405d3baeb3b9b9e

Analysis

max time kernel
121s
max time network
125s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
03/05/2024, 02:55

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General

Target

be3fb3ba42ddb93face7977a6e01c293dfad8a74c33d77209405d3baeb3b9b9e.exe
Size

33KB
MD5

aacf0abc2f81e9b9365aec61cadc44ac
SHA1

962aed1c7634b0c773d54c5e5dae8c615529a9e2
SHA256

be3fb3ba42ddb93face7977a6e01c293dfad8a74c33d77209405d3baeb3b9b9e
SHA512

34db510a3f5ca12356b23b25fc06f8a0e48b468afa2b512888d533ba7eebb72684a368191e8bebcda61ac1c165183a4a082dafd6c6d07149310d7a77b3660b1c
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznStEkcsgRI:b/yC4GyNM01GuQMNXw2PSjSKkcJRI

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000d000000012321-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2624	retln.exe

Loads dropped DLL 1 IoCs

pid	Process
1288	be3fb3ba42ddb93face7977a6e01c293dfad8a74c33d77209405d3baeb3b9b9e.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
1288	be3fb3ba42ddb93face7977a6e01c293dfad8a74c33d77209405d3baeb3b9b9e.exe
2624	retln.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1288 wrote to memory of 2624	1288	be3fb3ba42ddb93face7977a6e01c293dfad8a74c33d77209405d3baeb3b9b9e.exe	28
PID 1288 wrote to memory of 2624	1288	be3fb3ba42ddb93face7977a6e01c293dfad8a74c33d77209405d3baeb3b9b9e.exe	28
PID 1288 wrote to memory of 2624	1288	be3fb3ba42ddb93face7977a6e01c293dfad8a74c33d77209405d3baeb3b9b9e.exe	28
PID 1288 wrote to memory of 2624	1288	be3fb3ba42ddb93face7977a6e01c293dfad8a74c33d77209405d3baeb3b9b9e.exe	28

C:\Users\Admin\AppData\Local\Temp\be3fb3ba42ddb93face7977a6e01c293dfad8a74c33d77209405d3baeb3b9b9e.exe
"C:\Users\Admin\AppData\Local\Temp\be3fb3ba42ddb93face7977a6e01c293dfad8a74c33d77209405d3baeb3b9b9e.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1288
- C:\Users\Admin\AppData\Local\Temp\retln.exe
  "C:\Users\Admin\AppData\Local\Temp\retln.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:2624

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\retln.exe

Filesize
33KB

MD5
bf010bc8e42343d4148ed0f40e2a00f8

SHA1
2f5894ae9b7e11578b29ca843243bfdf2e9a9441

SHA256
55ef71bd6fa9eefde83b1a696f1ee318bcf6aeffb8aa83a2d2b5440823985aa8

SHA512
e693c6bdc29461c8a5938b72a74fa95dc7ddcd06a478816ca3354da4d1d45429a10dda6ac346f1d50d7636fd7ce69b9e72d93c1141753e936805c6fc9e4a8e71

Download Submit
memory/1288-0-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download
memory/1288-8-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download
memory/1288-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2624-23-0x00000000003F0000-0x00000000003F6000-memory.dmp

Filesize
24KB

Download