guloader | e81747a9ede60d251a5cca15da28963fb84975bcbd4f6ff2bb96558639dfc9e6

General

Target

rELITETRADINGLL.exe
Size

930KB
MD5

c730d2226304c997f5cc1124a9cfe6fc
SHA1

79e71e9efb193582619f93287202404d73348088
SHA256

e81747a9ede60d251a5cca15da28963fb84975bcbd4f6ff2bb96558639dfc9e6
SHA512

b19281c8bbe04847bd4000da0569f9c9aa05be60e8b29c12ab116f8fa352d120675db8c165b00315366e13e6a0b5d055c36620f2f51eea300dac80deadd71e68
SSDEEP

24576:FerYnK4TwIld1V20+FDbzUMX5gBb4J4MOqsk3UiFZ:FerYnKRIlHV20+FDbzhX5gOJ8TJiz

Score

10^/10

guloader remcos odg-remotehost discovery downloader persistence rat

Malware Config

Extracted

Family

remcos

Botnet

odg-RemoteHost

C2

odg01.is-a-landscaper.com:49950

Attributes

audio_folder
MicRecords
audio_path
ApplicationPath
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
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-GN5MV3
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
take_screenshot_option
false
take_screenshot_time
5

Signatures

Guloader family
guloader
Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader
Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
Remcos family
remcos

Downloads MZ/PE file 1 IoCs

flow	pid	Process
55	3176	Process not Found

Loads dropped DLL 1 IoCs

pid	Process
2880	rELITETRADINGLL.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2656314083-4170277356-267438488-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\Navngiven187 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Unweaned236\\Treehair.exe"	rELITETRADINGLL.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
3160	rELITETRADINGLL.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2880	rELITETRADINGLL.exe
3160	rELITETRADINGLL.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 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	rELITETRADINGLL.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rELITETRADINGLL.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MicrosoftEdgeUpdate.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
4680	MicrosoftEdgeUpdate.exe

NSIS installer 2 IoCs

installer

resource	yara_rule
behavioral2/files/0x000300000001e734-21.dat	nsis_installer_1
behavioral2/files/0x000300000001e734-21.dat	nsis_installer_2

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2880	rELITETRADINGLL.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3160	rELITETRADINGLL.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2880 wrote to memory of 3160	2880	rELITETRADINGLL.exe	89
PID 2880 wrote to memory of 3160	2880	rELITETRADINGLL.exe	89
PID 2880 wrote to memory of 3160	2880	rELITETRADINGLL.exe	89
PID 2880 wrote to memory of 3160	2880	rELITETRADINGLL.exe	89

C:\Users\Admin\AppData\Local\Temp\rELITETRADINGLL.exe
"C:\Users\Admin\AppData\Local\Temp\rELITETRADINGLL.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2880
- C:\Users\Admin\AppData\Local\Temp\rELITETRADINGLL.exe
  "C:\Users\Admin\AppData\Local\Temp\rELITETRADINGLL.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:3160

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSI1IiBpbnN0YWxsZGF0ZXRpbWU9IjE3MzkyODM0MTAiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4Mzc1NTUzNjg2NzAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI1NDk1NzI4MzU2Ii8-PC9hcHA-PC9yZXF1ZXN0Pg
1⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:4680

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\Unweaned236\Treehair.exe

Filesize
930KB

MD5
c730d2226304c997f5cc1124a9cfe6fc

SHA1
79e71e9efb193582619f93287202404d73348088

SHA256
e81747a9ede60d251a5cca15da28963fb84975bcbd4f6ff2bb96558639dfc9e6

SHA512
b19281c8bbe04847bd4000da0569f9c9aa05be60e8b29c12ab116f8fa352d120675db8c165b00315366e13e6a0b5d055c36620f2f51eea300dac80deadd71e68

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsv13D3.tmp\System.dll

Filesize
12KB

MD5
dd87a973e01c5d9f8e0fcc81a0af7c7a

SHA1
c9206ced48d1e5bc648b1d0f54cccc18bf643a14

SHA256
7fb0f8d452fefaac789986b933df050f3d3e4feb8a8d9944ada995f572dcdca1

SHA512
4910b39b1a99622ac8b3c42f173bbe7035ac2f8d40c946468e7db7e2868a2da81ea94da453857f06f39957dd690c7f1ba498936a7aaa0039975e472376f92e8f

Download Submit
memory/2880-15-0x0000000077B41000-0x0000000077C61000-memory.dmp

Filesize
1.1MB

Download
memory/2880-16-0x0000000077B41000-0x0000000077C61000-memory.dmp

Filesize
1.1MB

Download
memory/2880-17-0x0000000074215000-0x0000000074216000-memory.dmp

Filesize
4KB

Download
memory/3160-18-0x0000000001710000-0x0000000005F2F000-memory.dmp

Filesize
72.1MB

Download
memory/3160-19-0x0000000077BC8000-0x0000000077BC9000-memory.dmp

Filesize
4KB

Download
memory/3160-20-0x0000000077B41000-0x0000000077C61000-memory.dmp

Filesize
1.1MB

Download
memory/3160-23-0x00000000004B0000-0x0000000001704000-memory.dmp

Filesize
18.3MB

Download
memory/3160-48-0x00000000004B0000-0x0000000001704000-memory.dmp

Filesize
18.3MB

Download
memory/3160-52-0x0000000001710000-0x0000000005F2F000-memory.dmp

Filesize
72.1MB

Download
memory/3160-53-0x00000000004B0000-0x0000000001704000-memory.dmp

Filesize
18.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads