guloader | 26194afcbac0da3df930c4d161f1245da3c8dfb56cb2a142104bc4ef633bceb5

General

Target

26194afcbac0da3df930c4d161f1245da3c8dfb56cb2a142104bc4ef633bceb5.exe
Size

445KB
MD5

a19ab2b228f001f8507e2f4e20eee8c9
SHA1

22eb01f357eb0e718d6c686d88902f1179a4674f
SHA256

26194afcbac0da3df930c4d161f1245da3c8dfb56cb2a142104bc4ef633bceb5
SHA512

5e0363f725bdd7027c7c3fd9a5fa63bd32e2a5d285824ac70405942ab0aea014cf5daae98979816692571405d89c1f1b88a8c6d143924af6cc3592b3a40c394e
SSDEEP

12288:I5Ag3K5G2YSEWFup7itYESLeYu7Jj1JK8s5FEeKy:Zg65vYSEWFoDu7Jj1JiceX

Score

10^/10

guloader discovery downloader evasion spyware stealer

Malware Config

Signatures

Guloader family
guloader
Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader
Disables Task Manager via registry modification
evasion

Loads dropped DLL 2 IoCs

pid	Process
2060	26194afcbac0da3df930c4d161f1245da3c8dfb56cb2a142104bc4ef633bceb5.exe
2060	26194afcbac0da3df930c4d161f1245da3c8dfb56cb2a142104bc4ef633bceb5.exe

Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003

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

Looks up external IP address via web service 3 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
14	checkip.dyndns.org
16	reallyfreegeoip.org
17	reallyfreegeoip.org

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\hjemmecomputeren.Pot	26194afcbac0da3df930c4d161f1245da3c8dfb56cb2a142104bc4ef633bceb5.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
2840	26194afcbac0da3df930c4d161f1245da3c8dfb56cb2a142104bc4ef633bceb5.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2060	26194afcbac0da3df930c4d161f1245da3c8dfb56cb2a142104bc4ef633bceb5.exe
2840	26194afcbac0da3df930c4d161f1245da3c8dfb56cb2a142104bc4ef633bceb5.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2060 set thread context of 2840	2060	26194afcbac0da3df930c4d161f1245da3c8dfb56cb2a142104bc4ef633bceb5.exe	29

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 2 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	26194afcbac0da3df930c4d161f1245da3c8dfb56cb2a142104bc4ef633bceb5.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	26194afcbac0da3df930c4d161f1245da3c8dfb56cb2a142104bc4ef633bceb5.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2060	26194afcbac0da3df930c4d161f1245da3c8dfb56cb2a142104bc4ef633bceb5.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2840	26194afcbac0da3df930c4d161f1245da3c8dfb56cb2a142104bc4ef633bceb5.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2060 wrote to memory of 2840	2060	26194afcbac0da3df930c4d161f1245da3c8dfb56cb2a142104bc4ef633bceb5.exe	29
PID 2060 wrote to memory of 2840	2060	26194afcbac0da3df930c4d161f1245da3c8dfb56cb2a142104bc4ef633bceb5.exe	29
PID 2060 wrote to memory of 2840	2060	26194afcbac0da3df930c4d161f1245da3c8dfb56cb2a142104bc4ef633bceb5.exe	29
PID 2060 wrote to memory of 2840	2060	26194afcbac0da3df930c4d161f1245da3c8dfb56cb2a142104bc4ef633bceb5.exe	29
PID 2060 wrote to memory of 2840	2060	26194afcbac0da3df930c4d161f1245da3c8dfb56cb2a142104bc4ef633bceb5.exe	29
PID 2060 wrote to memory of 2840	2060	26194afcbac0da3df930c4d161f1245da3c8dfb56cb2a142104bc4ef633bceb5.exe	29

C:\Users\Admin\AppData\Local\Temp\26194afcbac0da3df930c4d161f1245da3c8dfb56cb2a142104bc4ef633bceb5.exe
"C:\Users\Admin\AppData\Local\Temp\26194afcbac0da3df930c4d161f1245da3c8dfb56cb2a142104bc4ef633bceb5.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2060
- C:\Users\Admin\AppData\Local\Temp\26194afcbac0da3df930c4d161f1245da3c8dfb56cb2a142104bc4ef633bceb5.exe
  "C:\Users\Admin\AppData\Local\Temp\26194afcbac0da3df930c4d161f1245da3c8dfb56cb2a142104bc4ef633bceb5.exe"
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:2840

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\nsz7022.tmp\System.dll

Filesize
11KB

MD5
ee260c45e97b62a5e42f17460d406068

SHA1
df35f6300a03c4d3d3bd69752574426296b78695

SHA256
e94a1f7bcd7e0d532b660d0af468eb3321536c3efdca265e61f9ec174b1aef27

SHA512
a98f350d17c9057f33e5847462a87d59cbf2aaeda7f6299b0d49bb455e484ce4660c12d2eb8c4a0d21df523e729222bbd6c820bf25b081bc7478152515b414b3

Download Submit
memory/2060-16-0x0000000002960000-0x0000000003B4E000-memory.dmp

Filesize
17.9MB

Download
memory/2060-17-0x0000000002960000-0x0000000003B4E000-memory.dmp

Filesize
17.9MB

Download
memory/2060-18-0x0000000077C21000-0x0000000077D22000-memory.dmp

Filesize
1.0MB

Download
memory/2060-19-0x0000000077C20000-0x0000000077DC9000-memory.dmp

Filesize
1.7MB

Download
memory/2060-21-0x0000000002960000-0x0000000003B4E000-memory.dmp

Filesize
17.9MB

Download
memory/2840-20-0x0000000077C20000-0x0000000077DC9000-memory.dmp

Filesize
1.7MB

Download
memory/2840-28-0x0000000000460000-0x00000000014C2000-memory.dmp

Filesize
16.4MB

Download
memory/2840-45-0x0000000000460000-0x00000000014C2000-memory.dmp

Filesize
16.4MB

Download
memory/2840-46-0x0000000000460000-0x000000000047E000-memory.dmp

Filesize
120KB

Download

Analysis

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