guloader | c293bf33914dcab819681869283b39b23b45fb608d42fa3a26562d301eab3746

General

Target

MalwareBazaar.exe
Size

549KB
MD5

a2a727c5efacf8ab6028c4524e21bef9
SHA1

d3ea7079959667ad786a7142371f536feb537802
SHA256

c293bf33914dcab819681869283b39b23b45fb608d42fa3a26562d301eab3746
SHA512

822accf498440732a5df498558d33e9191a62b5b6386dbaec0784abb27c93865cb0dae15a43c99515f1c5cbb217151a80659b915a5b3c07a550a6d2b02bc8c20
SSDEEP

12288:tLfCKKKKKI1KFeGkSrsUQ1nILHMEDm73l8a5+JS2rLaOvjKFDSLJPo7yF1mAm:tBEkQ1nILzClFiS2iYeNSZo26Am

Score

10^/10

guloader lokibot collection downloader execution spyware stealer trojan

Malware Config

Signatures

Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader
Lokibot
Lokibot is a Password and CryptoCoin Wallet Stealer.
trojan spyware stealer lokibot

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
2368	powershell.exe

Loads dropped DLL 2 IoCs

pid	Process
2368	powershell.exe
2792	Valmuer.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	Valmuer.exe
Key opened	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	Valmuer.exe
Key opened	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	Valmuer.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
3	drive.google.com
5	drive.google.com

Suspicious use of NtCreateThreadExHideFromDebugger 2 IoCs

pid	Process
2792	Valmuer.exe
2792	Valmuer.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2368	powershell.exe
2792	Valmuer.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2368 set thread context of 2792	2368	powershell.exe	32

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

System Information Discovery
T1082

NSIS installer 2 IoCs

installer

resource	yara_rule
behavioral1/files/0x000b000000016d89-24.dat	nsis_installer_1
behavioral1/files/0x000b000000016d89-24.dat	nsis_installer_2

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
2368	powershell.exe
2368	powershell.exe
2368	powershell.exe
2368	powershell.exe
2368	powershell.exe
2368	powershell.exe
2368	powershell.exe
2368	powershell.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2368	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2368	powershell.exe
Token: SeDebugPrivilege	2792	Valmuer.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2552 wrote to memory of 2368	2552	MalwareBazaar.exe	29
PID 2552 wrote to memory of 2368	2552	MalwareBazaar.exe	29
PID 2552 wrote to memory of 2368	2552	MalwareBazaar.exe	29
PID 2552 wrote to memory of 2368	2552	MalwareBazaar.exe	29
PID 2368 wrote to memory of 2792	2368	powershell.exe	32
PID 2368 wrote to memory of 2792	2368	powershell.exe	32
PID 2368 wrote to memory of 2792	2368	powershell.exe	32
PID 2368 wrote to memory of 2792	2368	powershell.exe	32
PID 2368 wrote to memory of 2792	2368	powershell.exe	32
PID 2368 wrote to memory of 2792	2368	powershell.exe	32

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	Valmuer.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	Valmuer.exe

C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe
"C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2552
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" -windowstyle hidden "$Nervures=Get-Content 'C:\Users\Admin\AppData\Local\Bagtes\zygomata.Coo';$Omfangsbedmmelses64=$Nervures.SubString(24976,3);.$Omfangsbedmmelses64($Nervures)"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Loads dropped DLL
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2368
- - C:\Users\Admin\AppData\Local\Temp\Valmuer.exe
    "C:\Users\Admin\AppData\Local\Temp\Valmuer.exe"
    3⤵
    - Loads dropped DLL
    - Accesses Microsoft Outlook profiles
    - Suspicious use of NtCreateThreadExHideFromDebugger
    - Suspicious use of NtSetInformationThreadHideFromDebugger
    - Suspicious use of AdjustPrivilegeToken
    - outlook_office_path
    - outlook_win_path
    PID:2792

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

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Bagtes\Papize.Qua252

Filesize
347KB

MD5
8cf5764661567cca0bdd3c87ca6aa89a

SHA1
76aae2dc6f7a27de01841890370c787f4759c2e2

SHA256
c95beac74c2688e9e19c57844380af7377b33df25a7d7d68c2d1c7d8680b64f5

SHA512
5a0097e9a61abdb577d15240d1297f9e49702d6e6bc08493054cca9cb33d75f9ac9eb540c917b407628164fd629d6bd1de147303f22be4bda4f14ff1763f1ed9

Download Submit
C:\Users\Admin\AppData\Local\Bagtes\zygomata.Coo

Filesize
68KB

MD5
e3a338313194482f28d8e74771889d09

SHA1
97ee237e38a3ef18a938334dec3a5aff1bffbcab

SHA256
e910d5f3afd1733a1824afc9a9dbb1c78529a2a5c63e24601038aa81241e9b7a

SHA512
301b208278db99007e10e9827d304fce475844239213e09f98054dd43e72891b84b6816b6bc58c1439df8ef7d74f9f8ef8ee1925736637c064e4481dc6baea6c

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-2212144002-1172735686-1556890956-1000\0f5007522459c86e95ffcc62f32308f1_5349ca0f-aec5-405f-83e0-aa034653cb76

Filesize
46B

MD5
d898504a722bff1524134c6ab6a5eaa5

SHA1
e0fdc90c2ca2a0219c99d2758e68c18875a3e11e

SHA256
878f32f76b159494f5a39f9321616c6068cdb82e88df89bcc739bbc1ea78e1f9

SHA512
26a4398bffb0c0aef9a6ec53cd3367a2d0abf2f70097f711bbbf1e9e32fd9f1a72121691bb6a39eeb55d596edd527934e541b4defb3b1426b1d1a6429804dc61

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-2212144002-1172735686-1556890956-1000\0f5007522459c86e95ffcc62f32308f1_5349ca0f-aec5-405f-83e0-aa034653cb76

Filesize
46B

MD5
c07225d4e7d01d31042965f048728a0a

SHA1
69d70b340fd9f44c89adb9a2278df84faa9906b7

SHA256
8c136c7ae08020ad16fd1928e36ad335ddef8b85906d66b712fff049aa57dc9a

SHA512
23d3cea738e1abf561320847c39dadc8b5794d7bd8761b0457956f827a17ad2556118b909a3e6929db79980ccf156a6f58ac823cf88329e62417d2807b34b64b

Download Submit
\Users\Admin\AppData\Local\Temp\Valmuer.exe

Filesize
549KB

MD5
a2a727c5efacf8ab6028c4524e21bef9

SHA1
d3ea7079959667ad786a7142371f536feb537802

SHA256
c293bf33914dcab819681869283b39b23b45fb608d42fa3a26562d301eab3746

SHA512
822accf498440732a5df498558d33e9191a62b5b6386dbaec0784abb27c93865cb0dae15a43c99515f1c5cbb217151a80659b915a5b3c07a550a6d2b02bc8c20

Download Submit
memory/2368-22-0x0000000006360000-0x0000000007405000-memory.dmp

Filesize
16.6MB

Download
memory/2368-17-0x0000000073FD0000-0x000000007457B000-memory.dmp

Filesize
5.7MB

Download
memory/2368-18-0x0000000073FD0000-0x000000007457B000-memory.dmp

Filesize
5.7MB

Download
memory/2368-13-0x0000000073FD0000-0x000000007457B000-memory.dmp

Filesize
5.7MB

Download
memory/2368-20-0x0000000073FD0000-0x000000007457B000-memory.dmp

Filesize
5.7MB

Download
memory/2368-21-0x0000000073FD0000-0x000000007457B000-memory.dmp

Filesize
5.7MB

Download
memory/2368-14-0x0000000073FD0000-0x000000007457B000-memory.dmp

Filesize
5.7MB

Download
memory/2368-10-0x0000000073FD1000-0x0000000073FD2000-memory.dmp

Filesize
4KB

Download
memory/2368-12-0x0000000073FD0000-0x000000007457B000-memory.dmp

Filesize
5.7MB

Download
memory/2368-11-0x0000000073FD0000-0x000000007457B000-memory.dmp

Filesize
5.7MB

Download
memory/2792-28-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/2792-29-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/2792-50-0x0000000001470000-0x0000000002515000-memory.dmp

Filesize
16.6MB

Download

Analysis

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