guloader | c79daeeb345b091760f3f1ac357454315d5d7b12792a129396b37da6a4bda5cf

Analysis

max time kernel
158s
max time network
167s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
29-01-2023 16:55

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General

Target

c79daeeb345b091760f3f1ac357454315d5d7b12792a129396b37da6a4bda5cf.exe
Size

104KB
MD5

5349b5908937badcc7da5a7e533ce5f2
SHA1

a3cccd7025d680f5f2f80180938b4a727af17fe6
SHA256

c79daeeb345b091760f3f1ac357454315d5d7b12792a129396b37da6a4bda5cf
SHA512

a618120c797756e352d6bc2094da0cc7ce5f4e1eeefe7e192774b7c9e0170397e531198fc932e48b9131ab9f677a4614794cb421f667c053e73ca15d6acc97a2
SSDEEP

1536:vX48EADaxqABSEbn/kFxqWyGYE0X48EAD:exqABS+sPqWD

Score

10^/10

guloader downloader

Malware Config

Extracted

Family

guloader

http://mtspsmjeli.sch.id/cl/VK_Remcos%20v2_AxaGIU151.bin

xor.base64

Signatures

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

c79daeeb345b091760f3f1ac357454315d5d7b12792a129396b37da6a4bda5cf.exec79daeeb345b091760f3f1ac357454315d5d7b12792a129396b37da6a4bda5cf.exe

description	ioc	process
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	c79daeeb345b091760f3f1ac357454315d5d7b12792a129396b37da6a4bda5cf.exe
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	c79daeeb345b091760f3f1ac357454315d5d7b12792a129396b37da6a4bda5cf.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

c79daeeb345b091760f3f1ac357454315d5d7b12792a129396b37da6a4bda5cf.exec79daeeb345b091760f3f1ac357454315d5d7b12792a129396b37da6a4bda5cf.exe

pid	process
4660	c79daeeb345b091760f3f1ac357454315d5d7b12792a129396b37da6a4bda5cf.exe
2724	c79daeeb345b091760f3f1ac357454315d5d7b12792a129396b37da6a4bda5cf.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

c79daeeb345b091760f3f1ac357454315d5d7b12792a129396b37da6a4bda5cf.exe

description	pid	process	target process
PID 4660 set thread context of 2724	4660	c79daeeb345b091760f3f1ac357454315d5d7b12792a129396b37da6a4bda5cf.exe	c79daeeb345b091760f3f1ac357454315d5d7b12792a129396b37da6a4bda5cf.exe

Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

c79daeeb345b091760f3f1ac357454315d5d7b12792a129396b37da6a4bda5cf.exe

pid process

4660 c79daeeb345b091760f3f1ac357454315d5d7b12792a129396b37da6a4bda5cf.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

c79daeeb345b091760f3f1ac357454315d5d7b12792a129396b37da6a4bda5cf.exe

pid process

4660 c79daeeb345b091760f3f1ac357454315d5d7b12792a129396b37da6a4bda5cf.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

c79daeeb345b091760f3f1ac357454315d5d7b12792a129396b37da6a4bda5cf.exe

description	pid	process	target process
PID 4660 wrote to memory of 2724	4660	c79daeeb345b091760f3f1ac357454315d5d7b12792a129396b37da6a4bda5cf.exe	c79daeeb345b091760f3f1ac357454315d5d7b12792a129396b37da6a4bda5cf.exe
PID 4660 wrote to memory of 2724	4660	c79daeeb345b091760f3f1ac357454315d5d7b12792a129396b37da6a4bda5cf.exe	c79daeeb345b091760f3f1ac357454315d5d7b12792a129396b37da6a4bda5cf.exe
PID 4660 wrote to memory of 2724	4660	c79daeeb345b091760f3f1ac357454315d5d7b12792a129396b37da6a4bda5cf.exe	c79daeeb345b091760f3f1ac357454315d5d7b12792a129396b37da6a4bda5cf.exe
PID 4660 wrote to memory of 2724	4660	c79daeeb345b091760f3f1ac357454315d5d7b12792a129396b37da6a4bda5cf.exe	c79daeeb345b091760f3f1ac357454315d5d7b12792a129396b37da6a4bda5cf.exe

C:\Users\Admin\AppData\Local\Temp\c79daeeb345b091760f3f1ac357454315d5d7b12792a129396b37da6a4bda5cf.exe
"C:\Users\Admin\AppData\Local\Temp\c79daeeb345b091760f3f1ac357454315d5d7b12792a129396b37da6a4bda5cf.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:4660
- C:\Users\Admin\AppData\Local\Temp\c79daeeb345b091760f3f1ac357454315d5d7b12792a129396b37da6a4bda5cf.exe
  "C:\Users\Admin\AppData\Local\Temp\c79daeeb345b091760f3f1ac357454315d5d7b12792a129396b37da6a4bda5cf.exe"
  2⤵
  - Checks QEMU agent file
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  PID:2724

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2724-144-0x00000000778A0000-0x0000000077A43000-memory.dmp

Filesize
1.6MB

Download
memory/2724-136-0x0000000000000000-mapping.dmp

Download
memory/2724-137-0x0000000000400000-0x000000000055D000-memory.dmp

Filesize
1.4MB

Download
memory/2724-141-0x0000000000401000-0x0000000000506000-memory.dmp

Filesize
1.0MB

Download
memory/2724-143-0x00007FF9F26D0000-0x00007FF9F28C5000-memory.dmp

Filesize
2.0MB

Download
memory/2724-142-0x0000000000560000-0x0000000000660000-memory.dmp

Filesize
1024KB

Download
memory/2724-145-0x0000000000560000-0x0000000000660000-memory.dmp

Filesize
1024KB

Download
memory/2724-146-0x00007FF9F26D0000-0x00007FF9F28C5000-memory.dmp

Filesize
2.0MB

Download
memory/2724-147-0x00000000778A0000-0x0000000077A43000-memory.dmp

Filesize
1.6MB

Download
memory/4660-135-0x00007FF9F26D0000-0x00007FF9F28C5000-memory.dmp

Filesize
2.0MB

Download
memory/4660-138-0x0000000002280000-0x000000000228C000-memory.dmp

Filesize
48KB

Download
memory/4660-140-0x00000000778A0000-0x0000000077A43000-memory.dmp

Filesize
1.6MB

Download
memory/4660-134-0x0000000002280000-0x000000000228C000-memory.dmp

Filesize
48KB

Download