guloader | e6341a92ab49bc2e926416dbe3429a5e96a6771effc4ab224ea0c1785df848fa

General

Target

SKTGHRO77395797593759737593759375793753957Slummet55.exe
Size

481KB
MD5

6304403095a696f2c74a7e022ee18af6
SHA1

a69d59aab5a94699ce0e5dea6304cb031f8d7c79
SHA256

0a5611401f99d5b7ce0b7d1e13bda3e0e908abb487987c1c7d3d667f3c4c4e16
SHA512

0d78df6576c24326fbd220bf7a116b52ceb57c6f1d86025c6b58b3c6e9de0b6a4cd79947a5aa59468033e45860eeebc6400c7704caa81911f24a8b79acf49c79
SSDEEP

12288:FY1nHGrmqu9HZS05uwGStaQ5Y7JJRMgTAUdey43gqt5R:FY5HGrmqoMfwN5Y7JJA/35

Score

10^/10

guloader discovery downloader execution

Malware Config

Signatures

Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
4560	powershell.exe

Loads dropped DLL 1 IoCs

pid	Process
1184	Impulsory.exe

Suspicious use of NtCreateThreadExHideFromDebugger 2 IoCs

pid	Process
1184	Impulsory.exe
1184	Impulsory.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
4560	powershell.exe
1184	Impulsory.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4560 set thread context of 1184	4560	powershell.exe	89

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 3 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	SKTGHRO77395797593759737593759375793753957Slummet55.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Impulsory.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
4560	powershell.exe
4560	powershell.exe
4560	powershell.exe
4560	powershell.exe
4560	powershell.exe
4560	powershell.exe
4560	powershell.exe
4560	powershell.exe
4560	powershell.exe
1184	Impulsory.exe
1184	Impulsory.exe
1184	Impulsory.exe
1184	Impulsory.exe
1184	Impulsory.exe
1184	Impulsory.exe
1184	Impulsory.exe
1184	Impulsory.exe
1184	Impulsory.exe
1184	Impulsory.exe
1184	Impulsory.exe
1184	Impulsory.exe
1184	Impulsory.exe
1184	Impulsory.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
4560	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4560	powershell.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3408 wrote to memory of 4560	3408	SKTGHRO77395797593759737593759375793753957Slummet55.exe	86
PID 3408 wrote to memory of 4560	3408	SKTGHRO77395797593759737593759375793753957Slummet55.exe	86
PID 3408 wrote to memory of 4560	3408	SKTGHRO77395797593759737593759375793753957Slummet55.exe	86
PID 4560 wrote to memory of 1184	4560	powershell.exe	89
PID 4560 wrote to memory of 1184	4560	powershell.exe	89
PID 4560 wrote to memory of 1184	4560	powershell.exe	89
PID 4560 wrote to memory of 1184	4560	powershell.exe	89
PID 4560 wrote to memory of 1184	4560	powershell.exe	89

C:\Users\Admin\AppData\Local\Temp\SKTGHRO77395797593759737593759375793753957Slummet55.exe
"C:\Users\Admin\AppData\Local\Temp\SKTGHRO77395797593759737593759375793753957Slummet55.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3408
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" -windowstyle hidden "$Theorizers=Get-Content 'C:\Users\Admin\AppData\Local\potaskens\ugentlige\Synkronmotorernes\Swarthiness.Mor204';$Anneths163=$Theorizers.SubString(3987,3);.$Anneths163($Theorizers)"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4560
- - C:\Users\Admin\AppData\Local\Temp\Impulsory.exe
    "C:\Users\Admin\AppData\Local\Temp\Impulsory.exe"
    3⤵
    - Loads dropped DLL
    - Suspicious use of NtCreateThreadExHideFromDebugger
    - Suspicious use of NtSetInformationThreadHideFromDebugger
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:1184

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
481KB

MD5
6304403095a696f2c74a7e022ee18af6

SHA1
a69d59aab5a94699ce0e5dea6304cb031f8d7c79

SHA256
0a5611401f99d5b7ce0b7d1e13bda3e0e908abb487987c1c7d3d667f3c4c4e16

SHA512
0d78df6576c24326fbd220bf7a116b52ceb57c6f1d86025c6b58b3c6e9de0b6a4cd79947a5aa59468033e45860eeebc6400c7704caa81911f24a8b79acf49c79

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_isskcj2s.kx2.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\potaskens\ugentlige\Synkronmotorernes\Corbiculum152.Gan

Filesize
367KB

MD5
9a262156e0c02952a4d95e35dcc68eac

SHA1
921c0335bf2cfee0fd2eee9f81d3b2bb6b176c7c

SHA256
c9f6393d23bd17d6e4a213bf0293750bd1d7e4e17c8061fb550a145e29cfa449

SHA512
c7ca0a2d1f23294b72430933a0cf6988926a28cdeec77c3ba73797f15b3c831782b7fdf86b307bdf59d37ba4097e48615df380ed6f9ebb2d694713bedbf77fef

Download Submit
C:\Users\Admin\AppData\Local\potaskens\ugentlige\Synkronmotorernes\Swarthiness.Mor204

Filesize
56KB

MD5
0b828f90d4a23ca0f2141e135a7b50b7

SHA1
d69a8fdfdd74b315c42e6a854773d8eb6bb3ca2f

SHA256
d25e8f1e81bf5a143523ccf23bbaa796d3a1d00fb944ecfe8f9f3119828c4a57

SHA512
b040903dbda02b94e672bb655818a020e535c1b414db3625e97a9c8b9a4f53374e426a0108697953e322593e0cbc0f5b5a41a9a3e843fc4ff329cec7b50ac250

Download Submit
memory/1184-67-0x0000000001660000-0x0000000004BE4000-memory.dmp

Filesize
53.5MB

Download
memory/1184-60-0x0000000001660000-0x0000000004BE4000-memory.dmp

Filesize
53.5MB

Download
memory/1184-54-0x00000000777D1000-0x00000000778F1000-memory.dmp

Filesize
1.1MB

Download
memory/1184-53-0x0000000077858000-0x0000000077859000-memory.dmp

Filesize
4KB

Download
memory/1184-52-0x00000000777D1000-0x00000000778F1000-memory.dmp

Filesize
1.1MB

Download
memory/1184-50-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/4560-35-0x0000000073D80000-0x0000000074530000-memory.dmp

Filesize
7.7MB

Download
memory/4560-40-0x0000000008C20000-0x000000000C1A4000-memory.dmp

Filesize
53.5MB

Download
memory/4560-28-0x0000000007320000-0x00000000073B6000-memory.dmp

Filesize
600KB

Download
memory/4560-29-0x0000000006890000-0x00000000068AA000-memory.dmp

Filesize
104KB

Download
memory/4560-30-0x00000000068E0000-0x0000000006902000-memory.dmp

Filesize
136KB

Download
memory/4560-31-0x0000000007970000-0x0000000007F14000-memory.dmp

Filesize
5.6MB

Download
memory/4560-26-0x0000000006380000-0x000000000639E000-memory.dmp

Filesize
120KB

Download
memory/4560-33-0x00000000085A0000-0x0000000008C1A000-memory.dmp

Filesize
6.5MB

Download
memory/4560-8-0x0000000073D8E000-0x0000000073D8F000-memory.dmp

Filesize
4KB

Download
memory/4560-36-0x0000000073D80000-0x0000000074530000-memory.dmp

Filesize
7.7MB

Download
memory/4560-37-0x0000000073D80000-0x0000000074530000-memory.dmp

Filesize
7.7MB

Download
memory/4560-21-0x0000000005D90000-0x00000000060E4000-memory.dmp

Filesize
3.3MB

Download
memory/4560-39-0x0000000073D80000-0x0000000074530000-memory.dmp

Filesize
7.7MB

Download
memory/4560-27-0x0000000006480000-0x00000000064CC000-memory.dmp

Filesize
304KB

Download
memory/4560-42-0x0000000073D80000-0x0000000074530000-memory.dmp

Filesize
7.7MB

Download
memory/4560-41-0x0000000073D8E000-0x0000000073D8F000-memory.dmp

Filesize
4KB

Download
memory/4560-43-0x0000000073D80000-0x0000000074530000-memory.dmp

Filesize
7.7MB

Download
memory/4560-46-0x0000000073D80000-0x0000000074530000-memory.dmp

Filesize
7.7MB

Download
memory/4560-15-0x0000000005D20000-0x0000000005D86000-memory.dmp

Filesize
408KB

Download
memory/4560-47-0x0000000073D80000-0x0000000074530000-memory.dmp

Filesize
7.7MB

Download
memory/4560-49-0x0000000073D80000-0x0000000074530000-memory.dmp

Filesize
7.7MB

Download
memory/4560-14-0x0000000005CB0000-0x0000000005D16000-memory.dmp

Filesize
408KB

Download
memory/4560-51-0x0000000073D80000-0x0000000074530000-memory.dmp

Filesize
7.7MB

Download
memory/4560-13-0x00000000053B0000-0x00000000053D2000-memory.dmp

Filesize
136KB

Download
memory/4560-12-0x0000000073D80000-0x0000000074530000-memory.dmp

Filesize
7.7MB

Download
memory/4560-11-0x0000000073D80000-0x0000000074530000-memory.dmp

Filesize
7.7MB

Download
memory/4560-10-0x0000000005510000-0x0000000005B38000-memory.dmp

Filesize
6.2MB

Download
memory/4560-9-0x0000000002DA0000-0x0000000002DD6000-memory.dmp

Filesize
216KB

Download

Analysis

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