e50c664ca7b1e84281ab465eecebbfc7b3a63b40e151d2c337a36789bff609b1

Analysis

max time kernel
149s
max time network
152s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
22/02/2024, 00:46

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General

Target

2024-02-22_474827f58d57f53386dfcc25db2a4f32_cryptolocker.exe
Size

58KB
MD5

474827f58d57f53386dfcc25db2a4f32
SHA1

f0476cd1ae1e56468dcec4eccb02767a9016de5a
SHA256

e50c664ca7b1e84281ab465eecebbfc7b3a63b40e151d2c337a36789bff609b1
SHA512

abe4a1332cb94277ba5af276199258dd854d74653e0bf70f22efb9ebf03300f5ddfc08d7d0370c9f6eb5bb7686f606211e325b4fd1787b1376635d3b0ace22bd
SSDEEP

768:z6LsoEEeegiZPvEhHSG+gzum/kLyMro2GtOOtEvwDpj/YMLam5appOq0r77:z6QFElP6n+gKmddpMOtEvwDpj9aYalg

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/3064-1-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3064-14-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3036-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000900000001227e-15.dat	CryptoLocker_rule2
behavioral1/memory/3036-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/3064-1-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3064-14-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3036-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000900000001227e-15.dat	CryptoLocker_set1
behavioral1/memory/3036-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/3064-1-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/3064-14-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/3036-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000900000001227e-15.dat	UPX
behavioral1/memory/3036-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
3036	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
3064	2024-02-22_474827f58d57f53386dfcc25db2a4f32_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/3064-1-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/3064-14-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/3036-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000900000001227e-15.dat	upx
behavioral1/memory/3036-26-0x0000000000500000-0x0000000000510000-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 3064 wrote to memory of 3036	3064	2024-02-22_474827f58d57f53386dfcc25db2a4f32_cryptolocker.exe	28
PID 3064 wrote to memory of 3036	3064	2024-02-22_474827f58d57f53386dfcc25db2a4f32_cryptolocker.exe	28
PID 3064 wrote to memory of 3036	3064	2024-02-22_474827f58d57f53386dfcc25db2a4f32_cryptolocker.exe	28
PID 3064 wrote to memory of 3036	3064	2024-02-22_474827f58d57f53386dfcc25db2a4f32_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-22_474827f58d57f53386dfcc25db2a4f32_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-22_474827f58d57f53386dfcc25db2a4f32_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3064
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3036

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

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
58KB

MD5
6335c03363f47612952df6aa7d0c5de7

SHA1
a739e5bf32a9c9f49a98c16495ecbcf9432cb39b

SHA256
1df8793e4b1910bdfe7a04fcf7427259e34775c243204bce169b8465ad4f297f

SHA512
25387bfb139349b210a1a282ddee505fc69d53bf06389a445470b583a669dcd84604951383b6f97e6b206d8a53a9b7f9f3bfa3828a0f27214b568553e8e75b50

Download Submit
memory/3036-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3036-18-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/3036-22-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/3036-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3064-1-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3064-0-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/3064-2-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download
memory/3064-4-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/3064-14-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download