skuld | b0985727eb488e671fbbdd39fcf8519b3b3fddf8fe5ea648f2474bf245d49dcc

Analysis

max time kernel
92s
max time network
93s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
26-12-2024 17:33

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General

Target

b0985727eb488e671fbbdd39fcf8519b3b3fddf8fe5ea648f2474bf245d49dcc.exe
Size

3.8MB
MD5

bf98c4097d3007739050771f898a479f
SHA1

27dc56615a9641d97f380bfda704c20b9eb58000
SHA256

b0985727eb488e671fbbdd39fcf8519b3b3fddf8fe5ea648f2474bf245d49dcc
SHA512

4a93a7694b4072a3b65b694ff1cdaaccf0250004e678b6ca06f85799750a39823013672ec65d39b30e5f638dcfa4cf8459766896f585cd2499308c7d50ad9a6d
SSDEEP

98304:wBY5QBeOT3uY2f2HsjkmNF4s0+wzo22A66bpb0C8mvYvGBkbI:wm5MXPmN17WYKpVhQ/c

Score

10^/10

skuld persistence stealer upx

Malware Config

Extracted

Family

skuld

https://discord.com/api/webhooks/1319769084723724329/0MTnaymIeCHurp0VMDTAOx0iXguX5iiX0hLraxSpl4htUXblPfXoUXl-qUK5q0g8EZ4w

Signatures

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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Realtek HD Audio Universal Service = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Protect\\SecurityHealthSystray.exe"	b0985727eb488e671fbbdd39fcf8519b3b3fddf8fe5ea648f2474bf245d49dcc.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3268-0-0x0000000000250000-0x0000000000C98000-memory.dmp	upx
behavioral2/memory/3268-1-0x0000000000250000-0x0000000000C98000-memory.dmp	upx

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3268	b0985727eb488e671fbbdd39fcf8519b3b3fddf8fe5ea648f2474bf245d49dcc.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 3268 wrote to memory of 3680	3268	b0985727eb488e671fbbdd39fcf8519b3b3fddf8fe5ea648f2474bf245d49dcc.exe	84
PID 3268 wrote to memory of 3680	3268	b0985727eb488e671fbbdd39fcf8519b3b3fddf8fe5ea648f2474bf245d49dcc.exe	84

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
3680	attrib.exe

C:\Users\Admin\AppData\Local\Temp\b0985727eb488e671fbbdd39fcf8519b3b3fddf8fe5ea648f2474bf245d49dcc.exe
"C:\Users\Admin\AppData\Local\Temp\b0985727eb488e671fbbdd39fcf8519b3b3fddf8fe5ea648f2474bf245d49dcc.exe"
1⤵
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3268
- C:\Windows\system32\attrib.exe
  attrib +h +s C:\Users\Admin\AppData\Local\Temp\b0985727eb488e671fbbdd39fcf8519b3b3fddf8fe5ea648f2474bf245d49dcc.exe
  2⤵
  - Views/modifies file attributes
  PID:3680

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/3268-0-0x0000000000250000-0x0000000000C98000-memory.dmp

Filesize
10.3MB

Download
memory/3268-1-0x0000000000250000-0x0000000000C98000-memory.dmp

Filesize
10.3MB

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads