guloader | de2346e7683a4ed34d62a2954a38949335e6c1b27085a1cc82c08b0c6aec514e

General

Target

Serfinanza_Extracto_3925684864088446202605_15411665189244361977_577131188431184261981_8054548415905136416878.exe
Size

293KB
MD5

f3ec2ac5f8cd8dfb46f3a4d14acc4c84
SHA1

45cc84a525944b49a77bb693e2cc6f9e38e7d27c
SHA256

de2346e7683a4ed34d62a2954a38949335e6c1b27085a1cc82c08b0c6aec514e
SHA512

890a5881861259344ae46ac43edffaf86a203604175da1c85b6b5964c61b9dff7b68d7c5191689913ac9adb11332b7c085ac5ca317124bea309641e7a702cbc3

Score

10^/10

guloader modiloader remcos adminbancos downloader evasion persistence rat trojan

Malware Config

Extracted

Family

remcos

Version

3.1.5 Pro

Botnet

AdminBancos

C2

databasepropersonombrecomercialideasearchwords.services:2508

Attributes

audio_folder
MicRecords
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
remcos.exe
copy_folder
Remcos
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
false
install_path
%AppData%
keylog_crypt
false
keylog_file
xlogs201.dat
keylog_flag
false
keylog_folder
Runtime2021
keylog_path
%AppData%
mouse_option
false
mutex
RemcosLEG-0OFGX3
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
Remcos
take_screenshot_option
false
take_screenshot_time
5
take_screenshot_title
notepad;solitaire;

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
Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
UAC bypass 3 TTPs
evasion trojan

Bypass User Account Control
T1088

Disabling Security Tools
T1089

Modify Registry
T1112

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:

Serfinanza_Extracto_3925684864088446202605_15411665189244361977_577131188431184261981_8054548415905136416878.exeieinstal.exe

description	ioc	process
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	Serfinanza_Extracto_3925684864088446202605_15411665189244361977_577131188431184261981_8054548415905136416878.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-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run	ieinstal.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\erelong = "C:\\Users\\Admin\\AppData\\Local\\Temp\\tusindbenets\\FORFJAMSKETS.exe"	ieinstal.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 3 IoCs

Processes:

Serfinanza_Extracto_3925684864088446202605_15411665189244361977_577131188431184261981_8054548415905136416878.exeieinstal.exe

pid	process
636	Serfinanza_Extracto_3925684864088446202605_15411665189244361977_577131188431184261981_8054548415905136416878.exe
744	ieinstal.exe
744	ieinstal.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Serfinanza_Extracto_3925684864088446202605_15411665189244361977_577131188431184261981_8054548415905136416878.exe

description	pid	process	target process
PID 636 set thread context of 744	636	Serfinanza_Extracto_3925684864088446202605_15411665189244361977_577131188431184261981_8054548415905136416878.exe	ieinstal.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

reg.exe

pid process

2328 reg.exe

pid	process
2328	reg.exe

Suspicious behavior: MapViewOfSection 2 IoCs

Processes:

Serfinanza_Extracto_3925684864088446202605_15411665189244361977_577131188431184261981_8054548415905136416878.exe

pid	process
636	Serfinanza_Extracto_3925684864088446202605_15411665189244361977_577131188431184261981_8054548415905136416878.exe
636	Serfinanza_Extracto_3925684864088446202605_15411665189244361977_577131188431184261981_8054548415905136416878.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

Serfinanza_Extracto_3925684864088446202605_15411665189244361977_577131188431184261981_8054548415905136416878.exeieinstal.exe

pid process

636 Serfinanza_Extracto_3925684864088446202605_15411665189244361977_577131188431184261981_8054548415905136416878.exe
744 ieinstal.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

Serfinanza_Extracto_3925684864088446202605_15411665189244361977_577131188431184261981_8054548415905136416878.exeieinstal.execmd.exe

description	pid	process	target process
PID 636 wrote to memory of 2176	636	Serfinanza_Extracto_3925684864088446202605_15411665189244361977_577131188431184261981_8054548415905136416878.exe	ieinstal.exe
PID 636 wrote to memory of 2176	636	Serfinanza_Extracto_3925684864088446202605_15411665189244361977_577131188431184261981_8054548415905136416878.exe	ieinstal.exe
PID 636 wrote to memory of 2176	636	Serfinanza_Extracto_3925684864088446202605_15411665189244361977_577131188431184261981_8054548415905136416878.exe	ieinstal.exe
PID 636 wrote to memory of 744	636	Serfinanza_Extracto_3925684864088446202605_15411665189244361977_577131188431184261981_8054548415905136416878.exe	ieinstal.exe
PID 636 wrote to memory of 744	636	Serfinanza_Extracto_3925684864088446202605_15411665189244361977_577131188431184261981_8054548415905136416878.exe	ieinstal.exe
PID 636 wrote to memory of 744	636	Serfinanza_Extracto_3925684864088446202605_15411665189244361977_577131188431184261981_8054548415905136416878.exe	ieinstal.exe
PID 636 wrote to memory of 744	636	Serfinanza_Extracto_3925684864088446202605_15411665189244361977_577131188431184261981_8054548415905136416878.exe	ieinstal.exe
PID 744 wrote to memory of 1648	744	ieinstal.exe	cmd.exe
PID 744 wrote to memory of 1648	744	ieinstal.exe	cmd.exe
PID 744 wrote to memory of 1648	744	ieinstal.exe	cmd.exe
PID 1648 wrote to memory of 2328	1648	cmd.exe	reg.exe
PID 1648 wrote to memory of 2328	1648	cmd.exe	reg.exe
PID 1648 wrote to memory of 2328	1648	cmd.exe	reg.exe

C:\Users\Admin\AppData\Local\Temp\Serfinanza_Extracto_3925684864088446202605_15411665189244361977_577131188431184261981_8054548415905136416878.exe
"C:\Users\Admin\AppData\Local\Temp\Serfinanza_Extracto_3925684864088446202605_15411665189244361977_577131188431184261981_8054548415905136416878.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:636

C:\Program Files (x86)\internet explorer\ieinstal.exe
"C:\Users\Admin\AppData\Local\Temp\Serfinanza_Extracto_3925684864088446202605_15411665189244361977_577131188431184261981_8054548415905136416878.exe"
2⤵
PID:2176

C:\Program Files (x86)\internet explorer\ieinstal.exe
"C:\Users\Admin\AppData\Local\Temp\Serfinanza_Extracto_3925684864088446202605_15411665189244361977_577131188431184261981_8054548415905136416878.exe"
2⤵
- Checks QEMU agent file
- Adds Run key to start application
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:744

C:\Windows\SysWOW64\cmd.exe
/k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
3⤵
- Suspicious use of WriteProcessMemory
PID:1648

C:\Windows\SysWOW64\reg.exe
C:\Windows\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
4⤵
- Modifies registry key
PID:2328

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Bypass User Account Control

1

T1088

Defense Evasion

Bypass User Account Control

1

T1088

Disabling Security Tools

1

T1089

Modify Registry

3

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/636-122-0x0000000077C60000-0x0000000077DEE000-memory.dmp

Filesize
1.6MB

Download
memory/636-116-0x0000000002BB0000-0x0000000002BC6000-memory.dmp

Filesize
88KB

Download
memory/636-121-0x0000000077C60000-0x0000000077DEE000-memory.dmp

Filesize
1.6MB

Download
memory/636-119-0x00007FFBBC280000-0x00007FFBBC45B000-memory.dmp

Filesize
1.9MB

Download
memory/636-120-0x0000000077C60000-0x0000000077DEE000-memory.dmp

Filesize
1.6MB

Download
memory/744-118-0x00000000030A0000-mapping.dmp

Download
memory/744-117-0x00000000030A0000-0x00000000031A0000-memory.dmp

Filesize
1024KB

Download
memory/744-124-0x0000000077C60000-0x0000000077DEE000-memory.dmp

Filesize
1.6MB

Download
memory/744-127-0x000000001EB00000-0x000000001EB01000-memory.dmp

Filesize
4KB

Download
memory/744-125-0x0000000077C60000-0x0000000077DEE000-memory.dmp

Filesize
1.6MB

Download
memory/744-123-0x00007FFBBC280000-0x00007FFBBC45B000-memory.dmp

Filesize
1.9MB

Download
memory/744-130-0x0000000000400000-0x0000000000553000-memory.dmp

Filesize
1.3MB

Download
memory/1648-128-0x0000000000000000-mapping.dmp

Download
memory/2328-129-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads