skuld | a2ce7baa72bb51468a0e92846530a8adc036fbf7ecdaaa40d0b68e86bb0d23e0

Analysis

max time kernel
13s
max time network
19s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
26-07-2024 14:15

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General

Target

skuld.sfx.exe
Size

3.7MB
MD5

69f045b706e34f7b013a1b3ef972b1f2
SHA1

0078959f87e4de4735def1ee9fcd99592757000b
SHA256

a2ce7baa72bb51468a0e92846530a8adc036fbf7ecdaaa40d0b68e86bb0d23e0
SHA512

294557695432f1c09e464c012ab330ca494fa9055c946e07b38723821e21ca646cf733a335bc29f343ba7b3c2eb18e51760bb7e7553682d9d315d38762eb9acd
SSDEEP

49152:t84a+Ka/iNj4WLG1cNLsvhZmKrniMrbokZPVuJqfK8eyl5LVPELrG0GR7Efp:tEXFegvKdYkZPYJoqyl5xPaNfp

Score

10^/10

skuld discovery stealer

Malware Config

Extracted

Family

skuld

https://discord.com/api/webhooks/1266323703936057355/RcZ4i7xtRnR9TI9igA9_Cyhc-8yXb2ttFBlD8urPmC8e1TbC6EGbQFWCJpC4NeNhKbL9

Signatures

Skuld stealer
An info stealer written in Go lang.
stealer skuld

Executes dropped EXE 1 IoCs

pid	Process
2780	skuld.exe

Loads dropped DLL 2 IoCs

pid	Process
2612	skuld.sfx.exe
2612	skuld.sfx.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	skuld.sfx.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2612 wrote to memory of 2780	2612	skuld.sfx.exe	30
PID 2612 wrote to memory of 2780	2612	skuld.sfx.exe	30
PID 2612 wrote to memory of 2780	2612	skuld.sfx.exe	30
PID 2612 wrote to memory of 2780	2612	skuld.sfx.exe	30

C:\Users\Admin\AppData\Local\Temp\skuld.sfx.exe
"C:\Users\Admin\AppData\Local\Temp\skuld.sfx.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2612
- C:\Users\Admin\AppData\Local\Temp\RarSFX0\skuld.exe
  "C:\Users\Admin\AppData\Local\Temp\RarSFX0\skuld.exe"
  2⤵
  - Executes dropped EXE
  PID:2780

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\RarSFX0\skuld.exe

Filesize
9.5MB

MD5
3ffb6b537cbb924e0ccfa2431a649ef3

SHA1
f813990a27cae2137fc0f7a3ec1e62462cda6f60

SHA256
4a1378fc9481b9815a286c7319c1f9d9da43aef1087c4ea5153f7111e50152bb

SHA512
6e60fa40b2d9e406b4682b9957823aa090fe52b4521d27305d9e5c953d0fdc9514127b0301e91a21a1a06d3ac991ba97325cc91d8fc2abee6eeb87f0eef9e926

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