guloader | fe62c3e75f40fdd55627df462b423c6f6004b26e454041ff115e755d1c26120b

General

Target

ATTACHED ORIGINAL REF __NOTE.exe
Size

252KB
MD5

995a9f0d72ee6407f3979543930d80ae
SHA1

8e38d89ab142ccbfb95952f873f49df56ab65055
SHA256

77a74587d301dfd79d5c60a874ac580e83c389e8566261f60b09d87cdffa2e38
SHA512

f72e8016c05880bc5a338266e5f4859b88c3c66b262264ce48fb30ca4efbf53eb6101579f46c4f83794ebb332a78e45bda8088b9707454b959a640b0b3278f1e
SSDEEP

3072:A1p9M3scGOWyLvr1f+lwYuJIVPUVJXgcAm6S6l7g98HimFx1zeBgxX:3nG1eJffYuJ4cVdx36Fl7U8mBe

Score

10^/10

guloader xloader i8be discovery downloader loader rat

Malware Config

Extracted

Family

guloader

C2

https://drive.google.com/uc?export=download&id=1-7CEqaIs0xr7KeLf1RsQKlZCjSlB91Jb

xor.base64

Extracted

Family

xloader

Version

2.3

Campaign

i8be

Decoy

cdymjim.icu

globalmilitaryaircraft.com

slusheestore.com

freepdfconvert.net

itadsweden.com

legenddocs.com

metholyptus.com

966cm.com

mobilitygloves-protect.com

travaze.net

go-kalisa.com

believehavefaith.com

nywebhost.com

semitsol.com

wowyuu.net

cochesb2b.com

gobesttobuy.com

senmec23.com

bmsgw.com

newazenterprise.com

Signatures

Guloader family
guloader
Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader
Xloader
Xloader is a rebranded version of Formbook malware.
loader xloader
Xloader family
xloader

Xloader payload 3 IoCs

rat

resource	yara_rule
behavioral1/memory/2172-33-0x0000000000400000-0x0000000000553000-memory.dmp	xloader
behavioral1/memory/2172-37-0x0000000000400000-0x0000000000553000-memory.dmp	xloader
behavioral1/memory/2768-41-0x0000000000080000-0x00000000000A8000-memory.dmp	xloader

Checks QEMU agent file 2 TTPs 2 IoCs

Checks presence of QEMU agent, possibly to detect virtualization.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	ATTACHED ORIGINAL REF __NOTE.exe
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	ATTACHED ORIGINAL REF __NOTE.exe

Deletes itself 1 IoCs

pid	Process
2016	cmd.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
4	drive.google.com
5	drive.google.com

Suspicious use of NtSetInformationThreadHideFromDebugger 3 IoCs

pid	Process
1628	ATTACHED ORIGINAL REF __NOTE.exe
2172	ATTACHED ORIGINAL REF __NOTE.exe
2172	ATTACHED ORIGINAL REF __NOTE.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1628 set thread context of 2172	1628	ATTACHED ORIGINAL REF __NOTE.exe	31
PID 2172 set thread context of 1212	2172	ATTACHED ORIGINAL REF __NOTE.exe	21
PID 2768 set thread context of 1212	2768	mstsc.exe	21

System Location Discovery: System Language Discovery 1 TTPs 4 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	ATTACHED ORIGINAL REF __NOTE.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ATTACHED ORIGINAL REF __NOTE.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mstsc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
2172	ATTACHED ORIGINAL REF __NOTE.exe
2172	ATTACHED ORIGINAL REF __NOTE.exe
2768	mstsc.exe
2768	mstsc.exe
2768	mstsc.exe
2768	mstsc.exe
2768	mstsc.exe
2768	mstsc.exe
2768	mstsc.exe
2768	mstsc.exe
2768	mstsc.exe
2768	mstsc.exe
2768	mstsc.exe
2768	mstsc.exe
2768	mstsc.exe
2768	mstsc.exe
2768	mstsc.exe
2768	mstsc.exe
2768	mstsc.exe
2768	mstsc.exe
2768	mstsc.exe
2768	mstsc.exe
2768	mstsc.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
1628	ATTACHED ORIGINAL REF __NOTE.exe
2172	ATTACHED ORIGINAL REF __NOTE.exe
2172	ATTACHED ORIGINAL REF __NOTE.exe
2172	ATTACHED ORIGINAL REF __NOTE.exe
2768	mstsc.exe
2768	mstsc.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2172	ATTACHED ORIGINAL REF __NOTE.exe
Token: SeDebugPrivilege	2768	mstsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1628	ATTACHED ORIGINAL REF __NOTE.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 1628 wrote to memory of 2172	1628	ATTACHED ORIGINAL REF __NOTE.exe	31
PID 1628 wrote to memory of 2172	1628	ATTACHED ORIGINAL REF __NOTE.exe	31
PID 1628 wrote to memory of 2172	1628	ATTACHED ORIGINAL REF __NOTE.exe	31
PID 1628 wrote to memory of 2172	1628	ATTACHED ORIGINAL REF __NOTE.exe	31
PID 1628 wrote to memory of 2172	1628	ATTACHED ORIGINAL REF __NOTE.exe	31
PID 1212 wrote to memory of 2768	1212	Explorer.EXE	33
PID 1212 wrote to memory of 2768	1212	Explorer.EXE	33
PID 1212 wrote to memory of 2768	1212	Explorer.EXE	33
PID 1212 wrote to memory of 2768	1212	Explorer.EXE	33
PID 2768 wrote to memory of 2016	2768	mstsc.exe	34
PID 2768 wrote to memory of 2016	2768	mstsc.exe	34
PID 2768 wrote to memory of 2016	2768	mstsc.exe	34
PID 2768 wrote to memory of 2016	2768	mstsc.exe	34

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1212
- C:\Users\Admin\AppData\Local\Temp\ATTACHED ORIGINAL REF __NOTE.exe
  "C:\Users\Admin\AppData\Local\Temp\ATTACHED ORIGINAL REF __NOTE.exe"
  2⤵
  - Checks QEMU agent file
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1628
- - C:\Users\Admin\AppData\Local\Temp\ATTACHED ORIGINAL REF __NOTE.exe
    "C:\Users\Admin\AppData\Local\Temp\ATTACHED ORIGINAL REF __NOTE.exe"
    3⤵
    - Checks QEMU agent file
    - Suspicious use of NtSetInformationThreadHideFromDebugger
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2172
- C:\Windows\SysWOW64\mstsc.exe
  "C:\Windows\SysWOW64\mstsc.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2768
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\ATTACHED ORIGINAL REF __NOTE.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:2016

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

memory/1212-35-0x0000000005020000-0x0000000005160000-memory.dmp

Filesize
1.2MB

Download
memory/1212-42-0x0000000005020000-0x0000000005160000-memory.dmp

Filesize
1.2MB

Download
memory/1628-6-0x0000000077900000-0x0000000077AA9000-memory.dmp

Filesize
1.7MB

Download
memory/1628-5-0x00000000003E0000-0x00000000003ED000-memory.dmp

Filesize
52KB

Download
memory/1628-2-0x00000000003E0000-0x00000000003ED000-memory.dmp

Filesize
52KB

Download
memory/1628-4-0x0000000077901000-0x0000000077A02000-memory.dmp

Filesize
1.0MB

Download
memory/1628-9-0x0000000077AF0000-0x0000000077BC6000-memory.dmp

Filesize
856KB

Download
memory/1628-10-0x00000000003E0000-0x00000000003ED000-memory.dmp

Filesize
52KB

Download
memory/1628-3-0x0000000077AF0000-0x0000000077BC6000-memory.dmp

Filesize
856KB

Download
memory/2172-33-0x0000000000400000-0x0000000000553000-memory.dmp

Filesize
1.3MB

Download
memory/2172-34-0x00000000001B0000-0x00000000002B0000-memory.dmp

Filesize
1024KB

Download
memory/2172-18-0x0000000000400000-0x0000000000553000-memory.dmp

Filesize
1.3MB

Download
memory/2172-11-0x0000000077900000-0x0000000077AA9000-memory.dmp

Filesize
1.7MB

Download
memory/2172-36-0x00000000001B0000-0x00000000002B0000-memory.dmp

Filesize
1024KB

Download
memory/2172-37-0x0000000000400000-0x0000000000553000-memory.dmp

Filesize
1.3MB

Download
memory/2172-7-0x0000000000400000-0x0000000000553000-memory.dmp

Filesize
1.3MB

Download
memory/2768-38-0x00000000000D0000-0x00000000001D4000-memory.dmp

Filesize
1.0MB

Download
memory/2768-40-0x00000000000D0000-0x00000000001D4000-memory.dmp

Filesize
1.0MB

Download
memory/2768-41-0x0000000000080000-0x00000000000A8000-memory.dmp

Filesize
160KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads