guloader | c6a10b1d71d2aae9601572d3dba867bb8e5fbd435b41f3fa111cb89acc86774b

General

Target

olieki.exe
Size

268KB
MD5

a63baaab947841c61e60e663c6209f80
SHA1

1f20c6525e42278f64303303468c13cf85ef5b4b
SHA256

c6a10b1d71d2aae9601572d3dba867bb8e5fbd435b41f3fa111cb89acc86774b
SHA512

021ec9ceebefdbc48b6ef86bc737534aae4cedbc0eff1198354bbe3cb8c7c6483e44ccf124466bd0d52931793aa114bff964b41b38ac5d773264a991c6bb9aae

Score

10^/10

guloader modiloader downloader persistence trojan

Malware Config

Signatures

Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader
ModiLoader, DBatLoader
ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.
trojan modiloader

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:

olieki.exeieinstal.exe

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

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

ieinstal.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Windows\CurrentVersion\Run	ieinstal.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Windows\CurrentVersion\Run\SYPHILIP = "C:\\Users\\Admin\\AppData\\Local\\Temp\\ernringso\\olieki.exe"	ieinstal.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 3 IoCs

Processes:

olieki.exeieinstal.exe

pid process

2024 olieki.exe
2032 ieinstal.exe
2032 ieinstal.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

olieki.exe

description pid process target process

PID 2024 set thread context of 2032 2024 olieki.exe ieinstal.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1480 2032 WerFault.exe ieinstal.exe
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

WerFault.exe

pid process

1480 WerFault.exe
1480 WerFault.exe
1480 WerFault.exe
1480 WerFault.exe
1480 WerFault.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

WerFault.exe

pid process

1480 WerFault.exe
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

olieki.exe

pid process

2024 olieki.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

WerFault.exe

description pid process

Token: SeDebugPrivilege 1480 WerFault.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

olieki.exe

pid process

2024 olieki.exe

pid	process
2024	olieki.exe
2032	ieinstal.exe
2032	ieinstal.exe

description	pid	process	target process
PID 2024 set thread context of 2032	2024	olieki.exe	ieinstal.exe

pid	pid_target	process	target process
1480	2032	WerFault.exe	ieinstal.exe

pid	process
1480	WerFault.exe
1480	WerFault.exe
1480	WerFault.exe
1480	WerFault.exe
1480	WerFault.exe

pid	process
1480	WerFault.exe

pid	process
2024	olieki.exe

description	pid	process
Token: SeDebugPrivilege	1480	WerFault.exe

pid	process
2024	olieki.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

olieki.exeieinstal.exe

description	pid	process	target process
PID 2024 wrote to memory of 2032	2024	olieki.exe	ieinstal.exe
PID 2024 wrote to memory of 2032	2024	olieki.exe	ieinstal.exe
PID 2024 wrote to memory of 2032	2024	olieki.exe	ieinstal.exe
PID 2024 wrote to memory of 2032	2024	olieki.exe	ieinstal.exe
PID 2024 wrote to memory of 2032	2024	olieki.exe	ieinstal.exe
PID 2024 wrote to memory of 2032	2024	olieki.exe	ieinstal.exe
PID 2024 wrote to memory of 2032	2024	olieki.exe	ieinstal.exe
PID 2024 wrote to memory of 2032	2024	olieki.exe	ieinstal.exe
PID 2032 wrote to memory of 1480	2032	ieinstal.exe	WerFault.exe
PID 2032 wrote to memory of 1480	2032	ieinstal.exe	WerFault.exe
PID 2032 wrote to memory of 1480	2032	ieinstal.exe	WerFault.exe
PID 2032 wrote to memory of 1480	2032	ieinstal.exe	WerFault.exe

C:\Users\Admin\AppData\Local\Temp\olieki.exe
"C:\Users\Admin\AppData\Local\Temp\olieki.exe"
1⤵
- Checks QEMU agent file
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2024

C:\Program Files (x86)\internet explorer\ieinstal.exe
"C:\Users\Admin\AppData\Local\Temp\olieki.exe"
2⤵
- Checks QEMU agent file
- Adds Run key to start application
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of WriteProcessMemory
PID:2032

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2032 -s 1364
3⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:1480

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/1480-67-0x0000000000000000-mapping.dmp

Download
memory/1480-68-0x0000000000290000-0x0000000000291000-memory.dmp

Filesize
4KB

Download
memory/2024-55-0x00000000002A0000-0x00000000002AF000-memory.dmp

Filesize
60KB

Download
memory/2024-57-0x0000000075821000-0x0000000075823000-memory.dmp

Filesize
8KB

Download
memory/2024-61-0x00000000777F0000-0x0000000077970000-memory.dmp

Filesize
1.5MB

Download
memory/2024-60-0x0000000077610000-0x00000000777B9000-memory.dmp

Filesize
1.7MB

Download
memory/2024-62-0x0000000077800000-0x00000000778D6000-memory.dmp

Filesize
856KB

Download
memory/2032-58-0x0000000000300000-0x0000000000400000-memory.dmp

Filesize
1024KB

Download
memory/2032-59-0x0000000000300000-mapping.dmp

Download
memory/2032-66-0x0000000077800000-0x00000000778D6000-memory.dmp

Filesize
856KB

Download
memory/2032-65-0x0000000077610000-0x00000000777B9000-memory.dmp

Filesize
1.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads