guloader | e38bdd8374c7e1640e8fe34c531228dd9389affb9659cb7c49c00129baa73bdf

General

Target

e38bdd8374c7e1640e8fe34c531228dd9389affb9659cb7c49c00129baa73bdf.exe
Size

885KB
MD5

5009d8c72623d30ce09149187c66d37c
SHA1

5c6035f099f16ff4753198e5f631ba410e98227f
SHA256

e38bdd8374c7e1640e8fe34c531228dd9389affb9659cb7c49c00129baa73bdf
SHA512

5908f38589b4097fd96f35129bbfa344a7940193ef0df6dab4e514106e7054c8ea9b3e97f9ebb7ff36fdbbd7c724cd1500e37f6c1ea6013f51842d39a642b5c1
SSDEEP

12288:i3nIF6bq58AFe0TenvBdHdpUXjwxipfpQGYAGau5yxX9O9R:i3IFsmez5pdpUXjUiNuGYpawA9uR

Score

10^/10

guloader remcos remotehost discovery downloader rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

162.251.122.106:2404

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-BHLA3T
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

Loads dropped DLL 2 IoCs

Processes:

e38bdd8374c7e1640e8fe34c531228dd9389affb9659cb7c49c00129baa73bdf.exe

pid	process
1088	e38bdd8374c7e1640e8fe34c531228dd9389affb9659cb7c49c00129baa73bdf.exe
1088	e38bdd8374c7e1640e8fe34c531228dd9389affb9659cb7c49c00129baa73bdf.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

Processes:

e38bdd8374c7e1640e8fe34c531228dd9389affb9659cb7c49c00129baa73bdf.exe

pid process

2960 e38bdd8374c7e1640e8fe34c531228dd9389affb9659cb7c49c00129baa73bdf.exe

pid	process
2960	e38bdd8374c7e1640e8fe34c531228dd9389affb9659cb7c49c00129baa73bdf.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

e38bdd8374c7e1640e8fe34c531228dd9389affb9659cb7c49c00129baa73bdf.exee38bdd8374c7e1640e8fe34c531228dd9389affb9659cb7c49c00129baa73bdf.exe

pid	process
1088	e38bdd8374c7e1640e8fe34c531228dd9389affb9659cb7c49c00129baa73bdf.exe
2960	e38bdd8374c7e1640e8fe34c531228dd9389affb9659cb7c49c00129baa73bdf.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

e38bdd8374c7e1640e8fe34c531228dd9389affb9659cb7c49c00129baa73bdf.exe

description	pid	process	target process
PID 1088 set thread context of 2960	1088	e38bdd8374c7e1640e8fe34c531228dd9389affb9659cb7c49c00129baa73bdf.exe	e38bdd8374c7e1640e8fe34c531228dd9389affb9659cb7c49c00129baa73bdf.exe

Drops file in Program Files directory 1 IoCs

Processes:

e38bdd8374c7e1640e8fe34c531228dd9389affb9659cb7c49c00129baa73bdf.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Common Files\kvindagtigt.ini	e38bdd8374c7e1640e8fe34c531228dd9389affb9659cb7c49c00129baa73bdf.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 2 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

Processes:

e38bdd8374c7e1640e8fe34c531228dd9389affb9659cb7c49c00129baa73bdf.exee38bdd8374c7e1640e8fe34c531228dd9389affb9659cb7c49c00129baa73bdf.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e38bdd8374c7e1640e8fe34c531228dd9389affb9659cb7c49c00129baa73bdf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e38bdd8374c7e1640e8fe34c531228dd9389affb9659cb7c49c00129baa73bdf.exe

Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

e38bdd8374c7e1640e8fe34c531228dd9389affb9659cb7c49c00129baa73bdf.exe

pid process

1088 e38bdd8374c7e1640e8fe34c531228dd9389affb9659cb7c49c00129baa73bdf.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

e38bdd8374c7e1640e8fe34c531228dd9389affb9659cb7c49c00129baa73bdf.exe

pid process

2960 e38bdd8374c7e1640e8fe34c531228dd9389affb9659cb7c49c00129baa73bdf.exe

pid	process
2960	e38bdd8374c7e1640e8fe34c531228dd9389affb9659cb7c49c00129baa73bdf.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

e38bdd8374c7e1640e8fe34c531228dd9389affb9659cb7c49c00129baa73bdf.exe

description	pid	process	target process
PID 1088 wrote to memory of 2960	1088	e38bdd8374c7e1640e8fe34c531228dd9389affb9659cb7c49c00129baa73bdf.exe	e38bdd8374c7e1640e8fe34c531228dd9389affb9659cb7c49c00129baa73bdf.exe
PID 1088 wrote to memory of 2960	1088	e38bdd8374c7e1640e8fe34c531228dd9389affb9659cb7c49c00129baa73bdf.exe	e38bdd8374c7e1640e8fe34c531228dd9389affb9659cb7c49c00129baa73bdf.exe
PID 1088 wrote to memory of 2960	1088	e38bdd8374c7e1640e8fe34c531228dd9389affb9659cb7c49c00129baa73bdf.exe	e38bdd8374c7e1640e8fe34c531228dd9389affb9659cb7c49c00129baa73bdf.exe
PID 1088 wrote to memory of 2960	1088	e38bdd8374c7e1640e8fe34c531228dd9389affb9659cb7c49c00129baa73bdf.exe	e38bdd8374c7e1640e8fe34c531228dd9389affb9659cb7c49c00129baa73bdf.exe
PID 1088 wrote to memory of 2960	1088	e38bdd8374c7e1640e8fe34c531228dd9389affb9659cb7c49c00129baa73bdf.exe	e38bdd8374c7e1640e8fe34c531228dd9389affb9659cb7c49c00129baa73bdf.exe

C:\Users\Admin\AppData\Local\Temp\e38bdd8374c7e1640e8fe34c531228dd9389affb9659cb7c49c00129baa73bdf.exe
"C:\Users\Admin\AppData\Local\Temp\e38bdd8374c7e1640e8fe34c531228dd9389affb9659cb7c49c00129baa73bdf.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1088
- C:\Users\Admin\AppData\Local\Temp\e38bdd8374c7e1640e8fe34c531228dd9389affb9659cb7c49c00129baa73bdf.exe
  "C:\Users\Admin\AppData\Local\Temp\e38bdd8374c7e1640e8fe34c531228dd9389affb9659cb7c49c00129baa73bdf.exe"
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2960

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\Common Files\kvindagtigt.ini

Filesize
52B

MD5
f298228d2d42ced0a00b0c5320000835

SHA1
fb06f02ddcda4c9ec752a688ee617064db3a49eb

SHA256
e399afe89f97eae7bcdae626913da1618f4f42ba11887217cdbf524720532ab2

SHA512
464da89f9e1d5935810443b20c3d19f77585d964df89f5cb427482a03c8ef6274d06cbc01533d92c691ffd55e1725ba5f427d023a45a5128bced0eee11e083fe

Download Submit
C:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
1bf491f46a891234950a4ce22ca78ee1

SHA1
fee0ce89e6bc8e48255c9106a1e09335775ab73d

SHA256
16a0a37e381e2d98038f0372d6f0adf0778a5620085e85a4aa44d8c88a064b16

SHA512
7698d12bf579cbe8e73402079d64c49e25ed346d6f5487f484297f15c66baaa39f61fbffd60f367cc14cae0a0c79bccd4c72e46b02b5db02529775cc24344bb4

Download Submit
C:\Users\Admin\AppData\Local\Temp\nspB816.tmp\System.dll

Filesize
12KB

MD5
6e55a6e7c3fdbd244042eb15cb1ec739

SHA1
070ea80e2192abc42f358d47b276990b5fa285a9

SHA256
acf90ab6f4edc687e94aaf604d05e16e6cfb5e35873783b50c66f307a35c6506

SHA512
2d504b74da38edc967e3859733a2a9cacd885db82f0ca69bfb66872e882707314c54238344d45945dc98bae85772aceef71a741787922d640627d3c8ae8f1c35

Download Submit
memory/1088-294-0x0000000004700000-0x000000000615F000-memory.dmp

Filesize
26.4MB

Download
memory/1088-295-0x0000000077241000-0x0000000077361000-memory.dmp

Filesize
1.1MB

Download
memory/1088-296-0x0000000073E95000-0x0000000073E96000-memory.dmp

Filesize
4KB

Download
memory/1088-297-0x0000000004700000-0x000000000615F000-memory.dmp

Filesize
26.4MB

Download
memory/2960-312-0x0000000000840000-0x0000000001A94000-memory.dmp

Filesize
18.3MB

Download
memory/2960-321-0x0000000000840000-0x0000000001A94000-memory.dmp

Filesize
18.3MB

Download
memory/2960-301-0x0000000000840000-0x0000000001A94000-memory.dmp

Filesize
18.3MB

Download
memory/2960-305-0x0000000000840000-0x0000000001A94000-memory.dmp

Filesize
18.3MB

Download
memory/2960-309-0x0000000000840000-0x0000000001A94000-memory.dmp

Filesize
18.3MB

Download
memory/2960-299-0x0000000000840000-0x0000000001A94000-memory.dmp

Filesize
18.3MB

Download
memory/2960-298-0x0000000001AA0000-0x00000000034FF000-memory.dmp

Filesize
26.4MB

Download
memory/2960-315-0x0000000000840000-0x0000000001A94000-memory.dmp

Filesize
18.3MB

Download
memory/2960-318-0x0000000000840000-0x0000000001A94000-memory.dmp

Filesize
18.3MB

Download
memory/2960-300-0x0000000001AA0000-0x00000000034FF000-memory.dmp

Filesize
26.4MB

Download
memory/2960-324-0x0000000000840000-0x0000000001A94000-memory.dmp

Filesize
18.3MB

Download
memory/2960-327-0x0000000000840000-0x0000000001A94000-memory.dmp

Filesize
18.3MB

Download
memory/2960-330-0x0000000000840000-0x0000000001A94000-memory.dmp

Filesize
18.3MB

Download
memory/2960-333-0x0000000000840000-0x0000000001A94000-memory.dmp

Filesize
18.3MB

Download
memory/2960-336-0x0000000000840000-0x0000000001A94000-memory.dmp

Filesize
18.3MB

Download
memory/2960-339-0x0000000000840000-0x0000000001A94000-memory.dmp

Filesize
18.3MB

Download
memory/2960-342-0x0000000000840000-0x0000000001A94000-memory.dmp

Filesize
18.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads