c380dc741411129c8421439038381d67d2a26906cd29faa4dc643284bd6f1077

Analysis

max time kernel
150s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20231020-en
resource tags

arch:x64arch:x86image:win10v2004-20231020-enlocale:en-usos:windows10-2004-x64system
submitted
06/11/2023, 20:18

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General

Target

NEAS.2023-09-28_c1439efd2ef256ad5057f03f076162c6_cryptolocker.exe
Size

88KB
MD5

c1439efd2ef256ad5057f03f076162c6
SHA1

5ffdd6d48e1c3d98399c4fd504918cbdc03ebb1c
SHA256

c380dc741411129c8421439038381d67d2a26906cd29faa4dc643284bd6f1077
SHA512

06a13ac980f2c8aa40c263bbdab49cdcf3fe01538d11b52375680786efc692290fd07efa63c2a678fee5406b0609ed66e22bb696ff3468d3e6a320bb9bdc01a8
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgpl:AnBdOOtEvwDpj6za

Score

7^/10

upx

Malware Config

Signatures

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3350690463-3549324357-1323838019-1000\Control Panel\International\Geo\Nation	NEAS.2023-09-28_c1439efd2ef256ad5057f03f076162c6_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5000	asih.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3740-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x000500000001e9bf-13.dat	upx
behavioral2/files/0x000500000001e9bf-15.dat	upx
behavioral2/files/0x000500000001e9bf-16.dat	upx
behavioral2/memory/3740-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/5000-25-0x0000000000500000-0x000000000050F000-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 3 IoCs

description	pid	Process	procid_target
PID 3740 wrote to memory of 5000	3740	NEAS.2023-09-28_c1439efd2ef256ad5057f03f076162c6_cryptolocker.exe	89
PID 3740 wrote to memory of 5000	3740	NEAS.2023-09-28_c1439efd2ef256ad5057f03f076162c6_cryptolocker.exe	89
PID 3740 wrote to memory of 5000	3740	NEAS.2023-09-28_c1439efd2ef256ad5057f03f076162c6_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\NEAS.2023-09-28_c1439efd2ef256ad5057f03f076162c6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\NEAS.2023-09-28_c1439efd2ef256ad5057f03f076162c6_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3740
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:5000

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

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
88KB

MD5
ae2f8895f5879a358b55ab18ecd2d7db

SHA1
7f04259aa7652a4c1daa7e1909686bc477401caf

SHA256
fc2c723273dba11d6ac3e4625cb79914b35aab79037e9dc43b116b5042b5fb0c

SHA512
4ea673415c53466ef6a81987bcd68117c8c4c17db448b7937a3069d4bb4a8a39ad1aa830c7fdfd16972fc877610ddd528cd3fcfa31109576a80d0a569eccd5a5

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

Filesize
88KB

MD5
ae2f8895f5879a358b55ab18ecd2d7db

SHA1
7f04259aa7652a4c1daa7e1909686bc477401caf

SHA256
fc2c723273dba11d6ac3e4625cb79914b35aab79037e9dc43b116b5042b5fb0c

SHA512
4ea673415c53466ef6a81987bcd68117c8c4c17db448b7937a3069d4bb4a8a39ad1aa830c7fdfd16972fc877610ddd528cd3fcfa31109576a80d0a569eccd5a5

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

Filesize
88KB

MD5
ae2f8895f5879a358b55ab18ecd2d7db

SHA1
7f04259aa7652a4c1daa7e1909686bc477401caf

SHA256
fc2c723273dba11d6ac3e4625cb79914b35aab79037e9dc43b116b5042b5fb0c

SHA512
4ea673415c53466ef6a81987bcd68117c8c4c17db448b7937a3069d4bb4a8a39ad1aa830c7fdfd16972fc877610ddd528cd3fcfa31109576a80d0a569eccd5a5

Download Submit
memory/3740-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3740-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3740-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3740-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3740-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/5000-25-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download