guloader | 793f2f8dfed964a286fe7b96db07914872459c90baf13ff2c7b0bbeefa75abee

General

Target

793f2f8dfed964a286fe7b96db07914872459c90baf13ff2c7b0bbeefa75abee.exe
Size

84KB
MD5

70ed29c8a7ade32fabff34b24fa991b3
SHA1

4ef2f2e199afe62184aeb472e3727655167c6104
SHA256

793f2f8dfed964a286fe7b96db07914872459c90baf13ff2c7b0bbeefa75abee
SHA512

e2a0293af980c4b96cf061dfd6f90aa780f315109750657f6abe1b5a96f4b41875f1d8472ad082315461719257fc6fc6bf8bf9ab0048489e8ec9da734b9af50e
SSDEEP

768:Pw5XDW3Cf0jYEfGEYeqsW/y1cawgSNnPFfHr8jNEK4cRXuPHC5qLS7OGvy2yYJkT:45q3IeGv/oSBdL8jPsHsK+1OShJM

Score

10^/10

guloader downloader guloader

Malware Config

Extracted

Family

guloader

C2

https://drive.google.com/uc?export=download&id=1nnl01kb-i9suGiNkUXB-JA4XCUUKt-1j

xor.base64

Signatures

Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader

Guloader payload 4 IoCs

guloader

Processes:

resource	yara_rule
behavioral1/memory/1952-56-0x00000000003C0000-0x00000000003C9000-memory.dmp	family_guloader
behavioral1/memory/768-65-0x000000000102CE5E-mapping.dmp	family_guloader
behavioral1/memory/768-67-0x0000000000090000-0x0000000000190000-memory.dmp	family_guloader
behavioral1/memory/768-73-0x0000000000090000-0x0000000000190000-memory.dmp	family_guloader

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:

793f2f8dfed964a286fe7b96db07914872459c90baf13ff2c7b0bbeefa75abee.exeRegAsm.exe

description	ioc	process
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	793f2f8dfed964a286fe7b96db07914872459c90baf13ff2c7b0bbeefa75abee.exe
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	RegAsm.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102
Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

793f2f8dfed964a286fe7b96db07914872459c90baf13ff2c7b0bbeefa75abee.exeRegAsm.exe

pid process

1952 793f2f8dfed964a286fe7b96db07914872459c90baf13ff2c7b0bbeefa75abee.exe
768 RegAsm.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

793f2f8dfed964a286fe7b96db07914872459c90baf13ff2c7b0bbeefa75abee.exe

description	pid	process	target process
PID 1952 set thread context of 768	1952	793f2f8dfed964a286fe7b96db07914872459c90baf13ff2c7b0bbeefa75abee.exe	RegAsm.exe

Suspicious behavior: MapViewOfSection 3 IoCs

Processes:

793f2f8dfed964a286fe7b96db07914872459c90baf13ff2c7b0bbeefa75abee.exe

pid	process
1952	793f2f8dfed964a286fe7b96db07914872459c90baf13ff2c7b0bbeefa75abee.exe
1952	793f2f8dfed964a286fe7b96db07914872459c90baf13ff2c7b0bbeefa75abee.exe
1952	793f2f8dfed964a286fe7b96db07914872459c90baf13ff2c7b0bbeefa75abee.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

793f2f8dfed964a286fe7b96db07914872459c90baf13ff2c7b0bbeefa75abee.exe

pid process

1952 793f2f8dfed964a286fe7b96db07914872459c90baf13ff2c7b0bbeefa75abee.exe

Suspicious use of WriteProcessMemory 22 IoCs

Processes:

793f2f8dfed964a286fe7b96db07914872459c90baf13ff2c7b0bbeefa75abee.exe

description	pid	process	target process
PID 1952 wrote to memory of 1324	1952	793f2f8dfed964a286fe7b96db07914872459c90baf13ff2c7b0bbeefa75abee.exe	RegAsm.exe
PID 1952 wrote to memory of 1324	1952	793f2f8dfed964a286fe7b96db07914872459c90baf13ff2c7b0bbeefa75abee.exe	RegAsm.exe
PID 1952 wrote to memory of 1324	1952	793f2f8dfed964a286fe7b96db07914872459c90baf13ff2c7b0bbeefa75abee.exe	RegAsm.exe
PID 1952 wrote to memory of 1324	1952	793f2f8dfed964a286fe7b96db07914872459c90baf13ff2c7b0bbeefa75abee.exe	RegAsm.exe
PID 1952 wrote to memory of 1324	1952	793f2f8dfed964a286fe7b96db07914872459c90baf13ff2c7b0bbeefa75abee.exe	RegAsm.exe
PID 1952 wrote to memory of 1324	1952	793f2f8dfed964a286fe7b96db07914872459c90baf13ff2c7b0bbeefa75abee.exe	RegAsm.exe
PID 1952 wrote to memory of 1324	1952	793f2f8dfed964a286fe7b96db07914872459c90baf13ff2c7b0bbeefa75abee.exe	RegAsm.exe
PID 1952 wrote to memory of 468	1952	793f2f8dfed964a286fe7b96db07914872459c90baf13ff2c7b0bbeefa75abee.exe	RegAsm.exe
PID 1952 wrote to memory of 468	1952	793f2f8dfed964a286fe7b96db07914872459c90baf13ff2c7b0bbeefa75abee.exe	RegAsm.exe
PID 1952 wrote to memory of 468	1952	793f2f8dfed964a286fe7b96db07914872459c90baf13ff2c7b0bbeefa75abee.exe	RegAsm.exe
PID 1952 wrote to memory of 468	1952	793f2f8dfed964a286fe7b96db07914872459c90baf13ff2c7b0bbeefa75abee.exe	RegAsm.exe
PID 1952 wrote to memory of 468	1952	793f2f8dfed964a286fe7b96db07914872459c90baf13ff2c7b0bbeefa75abee.exe	RegAsm.exe
PID 1952 wrote to memory of 468	1952	793f2f8dfed964a286fe7b96db07914872459c90baf13ff2c7b0bbeefa75abee.exe	RegAsm.exe
PID 1952 wrote to memory of 468	1952	793f2f8dfed964a286fe7b96db07914872459c90baf13ff2c7b0bbeefa75abee.exe	RegAsm.exe
PID 1952 wrote to memory of 768	1952	793f2f8dfed964a286fe7b96db07914872459c90baf13ff2c7b0bbeefa75abee.exe	RegAsm.exe
PID 1952 wrote to memory of 768	1952	793f2f8dfed964a286fe7b96db07914872459c90baf13ff2c7b0bbeefa75abee.exe	RegAsm.exe
PID 1952 wrote to memory of 768	1952	793f2f8dfed964a286fe7b96db07914872459c90baf13ff2c7b0bbeefa75abee.exe	RegAsm.exe
PID 1952 wrote to memory of 768	1952	793f2f8dfed964a286fe7b96db07914872459c90baf13ff2c7b0bbeefa75abee.exe	RegAsm.exe
PID 1952 wrote to memory of 768	1952	793f2f8dfed964a286fe7b96db07914872459c90baf13ff2c7b0bbeefa75abee.exe	RegAsm.exe
PID 1952 wrote to memory of 768	1952	793f2f8dfed964a286fe7b96db07914872459c90baf13ff2c7b0bbeefa75abee.exe	RegAsm.exe
PID 1952 wrote to memory of 768	1952	793f2f8dfed964a286fe7b96db07914872459c90baf13ff2c7b0bbeefa75abee.exe	RegAsm.exe
PID 1952 wrote to memory of 768	1952	793f2f8dfed964a286fe7b96db07914872459c90baf13ff2c7b0bbeefa75abee.exe	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\793f2f8dfed964a286fe7b96db07914872459c90baf13ff2c7b0bbeefa75abee.exe
"C:\Users\Admin\AppData\Local\Temp\793f2f8dfed964a286fe7b96db07914872459c90baf13ff2c7b0bbeefa75abee.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:1952
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Users\Admin\AppData\Local\Temp\793f2f8dfed964a286fe7b96db07914872459c90baf13ff2c7b0bbeefa75abee.exe"
  2⤵
  PID:1324
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Users\Admin\AppData\Local\Temp\793f2f8dfed964a286fe7b96db07914872459c90baf13ff2c7b0bbeefa75abee.exe"
  2⤵
  PID:468
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Users\Admin\AppData\Local\Temp\793f2f8dfed964a286fe7b96db07914872459c90baf13ff2c7b0bbeefa75abee.exe"
  2⤵
  - Checks QEMU agent file
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  PID:768

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Web Service

1

T1102

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

memory/768-65-0x000000000102CE5E-mapping.dmp

Download
memory/768-74-0x0000000077750000-0x00000000778D0000-memory.dmp

Filesize
1.5MB

Download
memory/768-73-0x0000000000090000-0x0000000000190000-memory.dmp

Filesize
1024KB

Download
memory/768-68-0x0000000077570000-0x0000000077719000-memory.dmp

Filesize
1.7MB

Download
memory/768-67-0x0000000000090000-0x0000000000190000-memory.dmp

Filesize
1024KB

Download
memory/1952-60-0x0000000075D51000-0x0000000075D53000-memory.dmp

Filesize
8KB

Download
memory/1952-63-0x0000000077750000-0x00000000778D0000-memory.dmp

Filesize
1.5MB

Download
memory/1952-56-0x00000000003C0000-0x00000000003C9000-memory.dmp

Filesize
36KB

Download
memory/1952-69-0x00000000003C0000-0x00000000003C9000-memory.dmp

Filesize
36KB

Download
memory/1952-70-0x0000000077750000-0x00000000778D0000-memory.dmp

Filesize
1.5MB

Download
memory/1952-71-0x0000000077750000-0x00000000778D0000-memory.dmp

Filesize
1.5MB

Download
memory/1952-59-0x0000000077750000-0x00000000778D0000-memory.dmp

Filesize
1.5MB

Download
memory/1952-57-0x0000000077570000-0x0000000077719000-memory.dmp

Filesize
1.7MB

Download
memory/1952-75-0x00000000003C0000-0x00000000003C9000-memory.dmp

Filesize
36KB

Download
memory/1952-76-0x0000000077750000-0x00000000778D0000-memory.dmp

Filesize
1.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads