guloader | f6ff5a18073b56d3a8d83195fa49486e289524729a081b5e49664f38854fe7e3

General

Target

f6ff5a18073b56d3a8d83195fa49486e289524729a081b5e49664f38854fe7e3.exe
Size

678KB
MD5

71b2e12765ab5b744e42aea118f2845d
SHA1

8882d7c1ef14d140f9de727207a95ef5ffb68fd3
SHA256

f6ff5a18073b56d3a8d83195fa49486e289524729a081b5e49664f38854fe7e3
SHA512

67050f92dca57dc887d11736f7722c085e29b5a6e2974ff74e9ab2182856d6246ce113123a27ef13728d31ef2fab333cf677bf488f8f8ab400e65fd168262c20
SSDEEP

12288:uMw4EAPcLqU6LfBVbPWxAeWqHpST3yZrn0aHDyq9DSXALFWscaLU2:uMwtAPcLqU6nPKAzR3yBDyq0G62

Score

10^/10

guloader snakekeylogger collection downloader keylogger stealer

Malware Config

Extracted

Family

snakekeylogger

Credentials

Protocol: smtp
Host:
mail.eversafe.pt
Port:
587
Username:
pulqueriamonteiro@eversafe.pt
Password:
Ev3rsaf3_2021
Email To:
vbankz20@gmail.com

Signatures

Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader
Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
stealer keylogger snakekeylogger

Snake Keylogger payload 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2040-99-0x0000000000400000-0x0000000000615000-memory.dmp	family_snakekeylogger
behavioral1/memory/2040-101-0x0000000000400000-0x0000000000426000-memory.dmp	family_snakekeylogger
behavioral1/memory/2040-102-0x0000000036A20000-0x0000000036A60000-memory.dmp	family_snakekeylogger

Checks QEMU agent file 2 TTPs 2 IoCs

Checks presence of QEMU agent, possibly to detect virtualization.

Query Registry

T1012

System Information Discovery

T1082

Processes:

f6ff5a18073b56d3a8d83195fa49486e289524729a081b5e49664f38854fe7e3.execaspol.exe

description	ioc	process
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	f6ff5a18073b56d3a8d83195fa49486e289524729a081b5e49664f38854fe7e3.exe
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	caspol.exe

Loads dropped DLL 2 IoCs

Processes:

f6ff5a18073b56d3a8d83195fa49486e289524729a081b5e49664f38854fe7e3.exe

pid	process
2004	f6ff5a18073b56d3a8d83195fa49486e289524729a081b5e49664f38854fe7e3.exe
2004	f6ff5a18073b56d3a8d83195fa49486e289524729a081b5e49664f38854fe7e3.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

caspol.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	caspol.exe
Key opened	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	caspol.exe
Key opened	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	caspol.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

10 checkip.dyndns.org
Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

Processes:

caspol.exe

pid process

2040 caspol.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

f6ff5a18073b56d3a8d83195fa49486e289524729a081b5e49664f38854fe7e3.execaspol.exe

pid process

2004 f6ff5a18073b56d3a8d83195fa49486e289524729a081b5e49664f38854fe7e3.exe
2040 caspol.exe

flow	ioc
10	checkip.dyndns.org

pid	process
2040	caspol.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

f6ff5a18073b56d3a8d83195fa49486e289524729a081b5e49664f38854fe7e3.exe

description	pid	process	target process
PID 2004 set thread context of 2040	2004	f6ff5a18073b56d3a8d83195fa49486e289524729a081b5e49664f38854fe7e3.exe	caspol.exe

Drops file in Windows directory 1 IoCs

Processes:

f6ff5a18073b56d3a8d83195fa49486e289524729a081b5e49664f38854fe7e3.exe

description	ioc	process
File opened for modification	C:\Windows\resources\0409\Ledetekstens\smrokkerne\Slowheartedness.ini	f6ff5a18073b56d3a8d83195fa49486e289524729a081b5e49664f38854fe7e3.exe

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

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

996 2040 WerFault.exe caspol.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

caspol.exe

pid process

2040 caspol.exe
2040 caspol.exe
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

f6ff5a18073b56d3a8d83195fa49486e289524729a081b5e49664f38854fe7e3.exe

pid process

2004 f6ff5a18073b56d3a8d83195fa49486e289524729a081b5e49664f38854fe7e3.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

caspol.exe

description pid process

Token: SeDebugPrivilege 2040 caspol.exe

pid	pid_target	process	target process
996	2040	WerFault.exe	caspol.exe

pid	process
2040	caspol.exe
2040	caspol.exe

description	pid	process
Token: SeDebugPrivilege	2040	caspol.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

f6ff5a18073b56d3a8d83195fa49486e289524729a081b5e49664f38854fe7e3.execaspol.exe

description	pid	process	target process
PID 2004 wrote to memory of 2040	2004	f6ff5a18073b56d3a8d83195fa49486e289524729a081b5e49664f38854fe7e3.exe	caspol.exe
PID 2004 wrote to memory of 2040	2004	f6ff5a18073b56d3a8d83195fa49486e289524729a081b5e49664f38854fe7e3.exe	caspol.exe
PID 2004 wrote to memory of 2040	2004	f6ff5a18073b56d3a8d83195fa49486e289524729a081b5e49664f38854fe7e3.exe	caspol.exe
PID 2004 wrote to memory of 2040	2004	f6ff5a18073b56d3a8d83195fa49486e289524729a081b5e49664f38854fe7e3.exe	caspol.exe
PID 2004 wrote to memory of 2040	2004	f6ff5a18073b56d3a8d83195fa49486e289524729a081b5e49664f38854fe7e3.exe	caspol.exe
PID 2040 wrote to memory of 996	2040	caspol.exe	WerFault.exe
PID 2040 wrote to memory of 996	2040	caspol.exe	WerFault.exe
PID 2040 wrote to memory of 996	2040	caspol.exe	WerFault.exe
PID 2040 wrote to memory of 996	2040	caspol.exe	WerFault.exe

outlook_office_path 1 IoCs

Processes:

caspol.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	caspol.exe

outlook_win_path 1 IoCs

Processes:

caspol.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	caspol.exe

C:\Users\Admin\AppData\Local\Temp\f6ff5a18073b56d3a8d83195fa49486e289524729a081b5e49664f38854fe7e3.exe
"C:\Users\Admin\AppData\Local\Temp\f6ff5a18073b56d3a8d83195fa49486e289524729a081b5e49664f38854fe7e3.exe"
1⤵
- Checks QEMU agent file
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2004

C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe
"C:\Users\Admin\AppData\Local\Temp\f6ff5a18073b56d3a8d83195fa49486e289524729a081b5e49664f38854fe7e3.exe"
2⤵
- Checks QEMU agent file
- Accesses Microsoft Outlook profiles
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:2040

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2040 -s 1888
3⤵
- Program crash
PID:996

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Exfiltration

Command and Control

Web Service

1

T1102

Impact

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Downloads

\Users\Admin\AppData\Local\Temp\nsoFD93.tmp\AdvSplash.dll
Filesize
6KB

MD5
1871af84805057b5ebc05ee46b56625d

SHA1
50e1c315ad30f5f3f300c7cd9dd0d5d626fe0167

SHA256
62b3db0446750ca9fd693733eec927acc1f50012a47785343286e63b650b7621

SHA512
c1979ee98dfdb807776c439218528d80b4b244a87e692f1538e40f9c2c82db8b77485eb1429325b6f44419bf1f4cd454e43ff381eff077a8b4f4d9eb0d7e54d4

Download Submit
\Users\Admin\AppData\Local\Temp\nsoFD93.tmp\System.dll
Filesize
12KB

MD5
564bb0373067e1785cba7e4c24aab4bf

SHA1
7c9416a01d821b10b2eef97b80899d24014d6fc1

SHA256
7a9ddee34562cd3703f1502b5c70e99cd5bba15de2b6845a3555033d7f6cb2a5

SHA512
22c61a323cb9293d7ec5c7e7e60674d0e2f7b29d55be25eb3c128ea2cd7440a1400cee17c43896b996278007c0d247f331a9b8964e3a40a0eb1404a9596c4472

Download Submit
memory/2004-73-0x00000000057D0000-0x00000000082F5000-memory.dmp

Filesize
43.1MB

Download
memory/2004-74-0x00000000057D0000-0x00000000082F5000-memory.dmp

Filesize
43.1MB

Download
memory/2040-75-0x0000000001120000-0x0000000003C45000-memory.dmp

Filesize
43.1MB

Download
memory/2040-76-0x0000000001120000-0x0000000003C45000-memory.dmp

Filesize
43.1MB

Download
memory/2040-80-0x0000000000400000-0x0000000000615000-memory.dmp

Filesize
2.1MB

Download
memory/2040-99-0x0000000000400000-0x0000000000615000-memory.dmp

Filesize
2.1MB

Download
memory/2040-100-0x0000000001120000-0x0000000003C45000-memory.dmp

Filesize
43.1MB

Download
memory/2040-101-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2040-102-0x0000000036A20000-0x0000000036A60000-memory.dmp

Filesize
256KB

Download
memory/2040-105-0x0000000036A20000-0x0000000036A60000-memory.dmp

Filesize
256KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads