guloader | f4b530b4093c82b714a70d226bd2b92aee20991b99e6e3a6ebd545605216c4e1

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
05-12-2024 16:20

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General

Target

f4b530b4093c82b714a70d226bd2b92aee20991b99e6e3a6ebd545605216c4e1.exe
Size

787KB
MD5

9455cc1b8972fda8672a784ed6faea27
SHA1

a0fa1ebe603f4fc20a6529edfb36cccdac70550a
SHA256

f4b530b4093c82b714a70d226bd2b92aee20991b99e6e3a6ebd545605216c4e1
SHA512

3c48f19c1551c122eeef903179834f40578c23759b0e2529b106621da477aa2d13a24e8aa06c4dd58a32daee613b3ebca00996d4f302e50621cd39be6f9e08ee
SSDEEP

12288:YHANG3RciXWOBZSBRwEQTo7bN2u7o1lnMtVb0Cla+ve7bAvANa24jV:YHxcVcZwRBQIjt90sjvzE1

Score

10^/10

guloader discovery downloader execution

Malware Config

Signatures

Guloader family
guloader
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
1532	powershell.exe

Loads dropped DLL 1 IoCs

pid	Process
4800	Aneurysmally.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
1532	powershell.exe
4800	Aneurysmally.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 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	f4b530b4093c82b714a70d226bd2b92aee20991b99e6e3a6ebd545605216c4e1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Aneurysmally.exe

NSIS installer 2 IoCs

installer

resource	yara_rule
behavioral2/files/0x000a000000023c9b-65.dat	nsis_installer_1
behavioral2/files/0x000a000000023c9b-65.dat	nsis_installer_2

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
1532	powershell.exe
1532	powershell.exe
1532	powershell.exe
1532	powershell.exe
1532	powershell.exe
1532	powershell.exe
1532	powershell.exe
1532	powershell.exe
1532	powershell.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1532	powershell.exe

Suspicious use of AdjustPrivilegeToken 22 IoCs

description	pid	Process
Token: SeDebugPrivilege	1532	powershell.exe
Token: SeIncreaseQuotaPrivilege	1532	powershell.exe
Token: SeSecurityPrivilege	1532	powershell.exe
Token: SeTakeOwnershipPrivilege	1532	powershell.exe
Token: SeLoadDriverPrivilege	1532	powershell.exe
Token: SeSystemProfilePrivilege	1532	powershell.exe
Token: SeSystemtimePrivilege	1532	powershell.exe
Token: SeProfSingleProcessPrivilege	1532	powershell.exe
Token: SeIncBasePriorityPrivilege	1532	powershell.exe
Token: SeCreatePagefilePrivilege	1532	powershell.exe
Token: SeBackupPrivilege	1532	powershell.exe
Token: SeRestorePrivilege	1532	powershell.exe
Token: SeShutdownPrivilege	1532	powershell.exe
Token: SeDebugPrivilege	1532	powershell.exe
Token: SeSystemEnvironmentPrivilege	1532	powershell.exe
Token: SeRemoteShutdownPrivilege	1532	powershell.exe
Token: SeUndockPrivilege	1532	powershell.exe
Token: SeManageVolumePrivilege	1532	powershell.exe
Token: 33	1532	powershell.exe
Token: 34	1532	powershell.exe
Token: 35	1532	powershell.exe
Token: 36	1532	powershell.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1320 wrote to memory of 1532	1320	f4b530b4093c82b714a70d226bd2b92aee20991b99e6e3a6ebd545605216c4e1.exe	83
PID 1320 wrote to memory of 1532	1320	f4b530b4093c82b714a70d226bd2b92aee20991b99e6e3a6ebd545605216c4e1.exe	83
PID 1320 wrote to memory of 1532	1320	f4b530b4093c82b714a70d226bd2b92aee20991b99e6e3a6ebd545605216c4e1.exe	83
PID 1532 wrote to memory of 4800	1532	powershell.exe	95
PID 1532 wrote to memory of 4800	1532	powershell.exe	95
PID 1532 wrote to memory of 4800	1532	powershell.exe	95
PID 1532 wrote to memory of 4800	1532	powershell.exe	95

C:\Users\Admin\AppData\Local\Temp\f4b530b4093c82b714a70d226bd2b92aee20991b99e6e3a6ebd545605216c4e1.exe
"C:\Users\Admin\AppData\Local\Temp\f4b530b4093c82b714a70d226bd2b92aee20991b99e6e3a6ebd545605216c4e1.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1320
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" -windowstyle hidden "$Eksamensordningernes=Get-Content -raw 'C:\Users\Admin\AppData\Roaming\gurlis\billeter\pli\Betragtede\Prinz.skr';$Rumfangsformlerne=$Eksamensordningernes.SubString(71629,3);.$Rumfangsformlerne($Eksamensordningernes) "
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1532
- - C:\Users\Admin\AppData\Local\Temp\Aneurysmally.exe
    "C:\Users\Admin\AppData\Local\Temp\Aneurysmally.exe"
    3⤵
    - Loads dropped DLL
    - Suspicious use of NtSetInformationThreadHideFromDebugger
    - System Location Discovery: System Language Discovery
    PID:4800

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

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\Aneurysmally.exe

Filesize
787KB

MD5
9455cc1b8972fda8672a784ed6faea27

SHA1
a0fa1ebe603f4fc20a6529edfb36cccdac70550a

SHA256
f4b530b4093c82b714a70d226bd2b92aee20991b99e6e3a6ebd545605216c4e1

SHA512
3c48f19c1551c122eeef903179834f40578c23759b0e2529b106621da477aa2d13a24e8aa06c4dd58a32daee613b3ebca00996d4f302e50621cd39be6f9e08ee

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_skaxxbzv.z1m.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\gurlis\billeter\pli\Betragtede\Indtrkket.lam

Filesize
313KB

MD5
da4df765a84d695b4ee746498b6d48fc

SHA1
661c7dbab9d5abdfd23dc35a832b06388c44c8d1

SHA256
10f9a7d32bb35e5b99ce96f3b41b9ec6d0a9344abbacdff4d6481a87feab6515

SHA512
5b9ee826e93bcd9cb658f1e58de50074c3bc027c669b972b839b5d33222fa5614058421eed02d2c885e2c768e3a03f8d1da5085b72675a6757384aec1d41e3a6

Download Submit
C:\Users\Admin\AppData\Roaming\gurlis\billeter\pli\Betragtede\Prinz.skr

Filesize
69KB

MD5
4a0b60a1226bb2ef40fb1d7e2c9099d5

SHA1
a79b0ae605ad1cbc5d952552ea27a32894d92bf8

SHA256
47ab4a8fbfed001636264ab70a97b5ad9ef800c4f1a9f2e814bce99b12558fae

SHA512
310003836e7f2eef0f08005afa37afa663e83b19951855f241ebb412d475ee668fc1f2692d7a0d477c69a5081bc92a5fa5ec314bdb4fc9de2cf4416839714bf8

Download Submit
memory/1532-46-0x0000000006E20000-0x0000000006E3E000-memory.dmp

Filesize
120KB

Download
memory/1532-64-0x00000000742B0000-0x0000000074A60000-memory.dmp

Filesize
7.7MB

Download
memory/1532-13-0x0000000005310000-0x0000000005376000-memory.dmp

Filesize
408KB

Download
memory/1532-14-0x00000000053F0000-0x0000000005456000-memory.dmp

Filesize
408KB

Download
memory/1532-11-0x00000000742B0000-0x0000000074A60000-memory.dmp

Filesize
7.7MB

Download
memory/1532-20-0x0000000005460000-0x00000000057B4000-memory.dmp

Filesize
3.3MB

Download
memory/1532-7-0x00000000742BE000-0x00000000742BF000-memory.dmp

Filesize
4KB

Download
memory/1532-26-0x0000000005A10000-0x0000000005A5C000-memory.dmp

Filesize
304KB

Download
memory/1532-27-0x00000000069A0000-0x0000000006A36000-memory.dmp

Filesize
600KB

Download
memory/1532-28-0x0000000005F10000-0x0000000005F2A000-memory.dmp

Filesize
104KB

Download
memory/1532-29-0x0000000005F60000-0x0000000005F82000-memory.dmp

Filesize
136KB

Download
memory/1532-30-0x0000000006FF0000-0x0000000007594000-memory.dmp

Filesize
5.6MB

Download
memory/1532-10-0x00000000742B0000-0x0000000074A60000-memory.dmp

Filesize
7.7MB

Download
memory/1532-32-0x0000000007C20000-0x000000000829A000-memory.dmp

Filesize
6.5MB

Download
memory/1532-34-0x00000000742B0000-0x0000000074A60000-memory.dmp

Filesize
7.7MB

Download
memory/1532-33-0x0000000006E40000-0x0000000006E72000-memory.dmp

Filesize
200KB

Download
memory/1532-35-0x0000000070740000-0x000000007078C000-memory.dmp

Filesize
304KB

Download
memory/1532-48-0x0000000006FC0000-0x0000000006FCA000-memory.dmp

Filesize
40KB

Download
memory/1532-25-0x00000000059F0000-0x0000000005A0E000-memory.dmp

Filesize
120KB

Download
memory/1532-12-0x0000000005170000-0x0000000005192000-memory.dmp

Filesize
136KB

Download
memory/1532-36-0x0000000070EC0000-0x0000000071214000-memory.dmp

Filesize
3.3MB

Download
memory/1532-49-0x0000000007710000-0x000000000773A000-memory.dmp

Filesize
168KB

Download
memory/1532-50-0x0000000007740000-0x0000000007764000-memory.dmp

Filesize
144KB

Download
memory/1532-51-0x00000000742B0000-0x0000000074A60000-memory.dmp

Filesize
7.7MB

Download
memory/1532-52-0x00000000742B0000-0x0000000074A60000-memory.dmp

Filesize
7.7MB

Download
memory/1532-54-0x00000000742B0000-0x0000000074A60000-memory.dmp

Filesize
7.7MB

Download
memory/1532-9-0x0000000004AF0000-0x0000000005118000-memory.dmp

Filesize
6.2MB

Download
memory/1532-57-0x00000000742B0000-0x0000000074A60000-memory.dmp

Filesize
7.7MB

Download
memory/1532-58-0x00000000742B0000-0x0000000074A60000-memory.dmp

Filesize
7.7MB

Download
memory/1532-56-0x00000000742BE000-0x00000000742BF000-memory.dmp

Filesize
4KB

Download
memory/1532-60-0x00000000742B0000-0x0000000074A60000-memory.dmp

Filesize
7.7MB

Download
memory/1532-59-0x00000000082A0000-0x0000000009216000-memory.dmp

Filesize
15.5MB

Download
memory/1532-61-0x00000000742B0000-0x0000000074A60000-memory.dmp

Filesize
7.7MB

Download
memory/1532-63-0x00000000742B0000-0x0000000074A60000-memory.dmp

Filesize
7.7MB

Download
memory/1532-47-0x0000000006E90000-0x0000000006F33000-memory.dmp

Filesize
652KB

Download
memory/1532-8-0x0000000000990000-0x00000000009C6000-memory.dmp

Filesize
216KB

Download
memory/4800-66-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/4800-67-0x0000000001660000-0x00000000025D6000-memory.dmp

Filesize
15.5MB

Download
memory/4800-69-0x0000000001660000-0x00000000025D6000-memory.dmp

Filesize
15.5MB

Download
memory/4800-68-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download