remcos | f90bc2429f21b0f1eb58a81330c6a627a3f6cace2189babc00f5bb4e2853448d

Analysis

max time kernel
132s
max time network
161s
platform
windows10-2004_x64
resource
win10v2004-20230915-en
resource tags

arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
submitted
22-09-2023 01:13

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General

Target

80407312227a80e31ac1d171f2d9c8fb31ee16fc8d089d4c861d53b34e6630d2.exe
Size

882KB
MD5

22f0ac97de0f5dd3d4a95b9ba14684a5
SHA1

8c79409bda7b2bcc4eb418494bf0904048ecb316
SHA256

80407312227a80e31ac1d171f2d9c8fb31ee16fc8d089d4c861d53b34e6630d2
SHA512

f1eda7b0ce1fce5edbfec10a01f3c072de5f035a773fc635c29eee67fcb1ed3eb4795007722457ae12cb0d4f9f5a1ad9d809f7eed758b312087644ae6a10b9be
SSDEEP

24576:eq7JcjVuJlRAPpmZsWpdmlKK99NDpKGN/VcUN/:V7uEqisWvKWGNNN/

Score

10^/10

remcos crypted persistence rat

Malware Config

Extracted

Family

remcos

Botnet

Crypted

95.214.24.210:2404

Attributes

audio_folder
MicRecords
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
true
install_flag
false
keylog_crypt
false
keylog_file
ourytgbh.dat
keylog_flag
false
keylog_path
%AppData%
mouse_option
false
mutex
puestodg-TE5TIH
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
take_screenshot_option
false
take_screenshot_time
5

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

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:

80407312227a80e31ac1d171f2d9c8fb31ee16fc8d089d4c861d53b34e6630d2.exewab.exe

description	ioc	process
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	80407312227a80e31ac1d171f2d9c8fb31ee16fc8d089d4c861d53b34e6630d2.exe
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	wab.exe

Loads dropped DLL 6 IoCs

Processes:

80407312227a80e31ac1d171f2d9c8fb31ee16fc8d089d4c861d53b34e6630d2.exe

pid	process
4344	80407312227a80e31ac1d171f2d9c8fb31ee16fc8d089d4c861d53b34e6630d2.exe
4344	80407312227a80e31ac1d171f2d9c8fb31ee16fc8d089d4c861d53b34e6630d2.exe
4344	80407312227a80e31ac1d171f2d9c8fb31ee16fc8d089d4c861d53b34e6630d2.exe
4344	80407312227a80e31ac1d171f2d9c8fb31ee16fc8d089d4c861d53b34e6630d2.exe
4344	80407312227a80e31ac1d171f2d9c8fb31ee16fc8d089d4c861d53b34e6630d2.exe
4344	80407312227a80e31ac1d171f2d9c8fb31ee16fc8d089d4c861d53b34e6630d2.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

wab.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3027552071-446050021-1254071215-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\Startup key = "C:\\Users\\Admin\\AppData\\Local\\Temp\\subfolder1\\undistinguish.exe"	wab.exe

Suspicious use of NtCreateThreadExHideFromDebugger 2 IoCs

Processes:

wab.exe

pid process

3900 wab.exe
3900 wab.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

80407312227a80e31ac1d171f2d9c8fb31ee16fc8d089d4c861d53b34e6630d2.exewab.exe

pid process

4344 80407312227a80e31ac1d171f2d9c8fb31ee16fc8d089d4c861d53b34e6630d2.exe
3900 wab.exe

pid	process
3900	wab.exe
3900	wab.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

80407312227a80e31ac1d171f2d9c8fb31ee16fc8d089d4c861d53b34e6630d2.exe

description	pid	process	target process
PID 4344 set thread context of 3900	4344	80407312227a80e31ac1d171f2d9c8fb31ee16fc8d089d4c861d53b34e6630d2.exe	wab.exe

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

System Information Discovery
T1082
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

80407312227a80e31ac1d171f2d9c8fb31ee16fc8d089d4c861d53b34e6630d2.exe

pid process

4344 80407312227a80e31ac1d171f2d9c8fb31ee16fc8d089d4c861d53b34e6630d2.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

wab.exe

pid process

3900 wab.exe

pid	process
3900	wab.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

80407312227a80e31ac1d171f2d9c8fb31ee16fc8d089d4c861d53b34e6630d2.exe

description	pid	process	target process
PID 4344 wrote to memory of 3900	4344	80407312227a80e31ac1d171f2d9c8fb31ee16fc8d089d4c861d53b34e6630d2.exe	wab.exe
PID 4344 wrote to memory of 3900	4344	80407312227a80e31ac1d171f2d9c8fb31ee16fc8d089d4c861d53b34e6630d2.exe	wab.exe
PID 4344 wrote to memory of 3900	4344	80407312227a80e31ac1d171f2d9c8fb31ee16fc8d089d4c861d53b34e6630d2.exe	wab.exe
PID 4344 wrote to memory of 3900	4344	80407312227a80e31ac1d171f2d9c8fb31ee16fc8d089d4c861d53b34e6630d2.exe	wab.exe
PID 4344 wrote to memory of 3900	4344	80407312227a80e31ac1d171f2d9c8fb31ee16fc8d089d4c861d53b34e6630d2.exe	wab.exe

C:\Users\Admin\AppData\Local\Temp\80407312227a80e31ac1d171f2d9c8fb31ee16fc8d089d4c861d53b34e6630d2.exe
"C:\Users\Admin\AppData\Local\Temp\80407312227a80e31ac1d171f2d9c8fb31ee16fc8d089d4c861d53b34e6630d2.exe"
1⤵
- Checks QEMU agent file
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4344

C:\Program Files (x86)\windows mail\wab.exe
"C:\Users\Admin\AppData\Local\Temp\80407312227a80e31ac1d171f2d9c8fb31ee16fc8d089d4c861d53b34e6630d2.exe"
2⤵
- Checks QEMU agent file
- Adds Run key to start application
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetWindowsHookEx
PID:3900

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\nsn8C82.tmp\BgImage.dll
Filesize
7KB

MD5
487368e6fce9ab9c5ea053af0990c5ef

SHA1
b538e37c87d4b9a7645dcbbd9e93025a31849702

SHA256
e27efa5dfde875bd6b826fafb4c7698db6b6e30e68715a1c03eb018e3170fc04

SHA512
bb3ed4c0d17a11365b72653112b48c8c63ab10590dda3dfd90aa453f0d64203000e4571c73998063352240e1671d14da5ee394439899aaa31054fa2e9b722ea7

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsn8C82.tmp\BgImage.dll
Filesize
7KB

MD5
487368e6fce9ab9c5ea053af0990c5ef

SHA1
b538e37c87d4b9a7645dcbbd9e93025a31849702

SHA256
e27efa5dfde875bd6b826fafb4c7698db6b6e30e68715a1c03eb018e3170fc04

SHA512
bb3ed4c0d17a11365b72653112b48c8c63ab10590dda3dfd90aa453f0d64203000e4571c73998063352240e1671d14da5ee394439899aaa31054fa2e9b722ea7

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsn8C82.tmp\BgImage.dll
Filesize
7KB

MD5
487368e6fce9ab9c5ea053af0990c5ef

SHA1
b538e37c87d4b9a7645dcbbd9e93025a31849702

SHA256
e27efa5dfde875bd6b826fafb4c7698db6b6e30e68715a1c03eb018e3170fc04

SHA512
bb3ed4c0d17a11365b72653112b48c8c63ab10590dda3dfd90aa453f0d64203000e4571c73998063352240e1671d14da5ee394439899aaa31054fa2e9b722ea7

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsn8C82.tmp\System.dll
Filesize
12KB

MD5
0d7ad4f45dc6f5aa87f606d0331c6901

SHA1
48df0911f0484cbe2a8cdd5362140b63c41ee457

SHA256
3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca

SHA512
c07de7308cb54205e8bd703001a7fe4fd7796c9ac1b4bb330c77c872bf712b093645f40b80ce7127531fe6746a5b66e18ea073ab6a644934abed9bb64126fea9

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsn8C82.tmp\System.dll
Filesize
12KB

MD5
0d7ad4f45dc6f5aa87f606d0331c6901

SHA1
48df0911f0484cbe2a8cdd5362140b63c41ee457

SHA256
3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca

SHA512
c07de7308cb54205e8bd703001a7fe4fd7796c9ac1b4bb330c77c872bf712b093645f40b80ce7127531fe6746a5b66e18ea073ab6a644934abed9bb64126fea9

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsn8C82.tmp\System.dll
Filesize
12KB

MD5
0d7ad4f45dc6f5aa87f606d0331c6901

SHA1
48df0911f0484cbe2a8cdd5362140b63c41ee457

SHA256
3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca

SHA512
c07de7308cb54205e8bd703001a7fe4fd7796c9ac1b4bb330c77c872bf712b093645f40b80ce7127531fe6746a5b66e18ea073ab6a644934abed9bb64126fea9

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsn8C82.tmp\nsDialogs.dll
Filesize
9KB

MD5
466179e1c8ee8a1ff5e4427dbb6c4a01

SHA1
eb607467009074278e4bd50c7eab400e95ae48f7

SHA256
1e40211af65923c2f4fd02ce021458a7745d28e2f383835e3015e96575632172

SHA512
7508a29c722d45297bfb090c8eb49bd1560ef7d4b35413f16a8aed62d3b1030a93d001a09de98c2b9fea9acf062dc99a7278786f4ece222e7436b261d14ca817

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsn8C82.tmp\nsDialogs.dll
Filesize
9KB

MD5
466179e1c8ee8a1ff5e4427dbb6c4a01

SHA1
eb607467009074278e4bd50c7eab400e95ae48f7

SHA256
1e40211af65923c2f4fd02ce021458a7745d28e2f383835e3015e96575632172

SHA512
7508a29c722d45297bfb090c8eb49bd1560ef7d4b35413f16a8aed62d3b1030a93d001a09de98c2b9fea9acf062dc99a7278786f4ece222e7436b261d14ca817

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsn8C82.tmp\nsDialogs.dll
Filesize
9KB

MD5
466179e1c8ee8a1ff5e4427dbb6c4a01

SHA1
eb607467009074278e4bd50c7eab400e95ae48f7

SHA256
1e40211af65923c2f4fd02ce021458a7745d28e2f383835e3015e96575632172

SHA512
7508a29c722d45297bfb090c8eb49bd1560ef7d4b35413f16a8aed62d3b1030a93d001a09de98c2b9fea9acf062dc99a7278786f4ece222e7436b261d14ca817

Download Submit
memory/3900-49-0x00000000737B0000-0x0000000074A04000-memory.dmp

Filesize
18.3MB

Download
memory/3900-56-0x00000000737B0000-0x0000000074A04000-memory.dmp

Filesize
18.3MB

Download
memory/3900-29-0x0000000077E51000-0x0000000077F71000-memory.dmp

Filesize
1.1MB

Download
memory/3900-31-0x00000000737B0000-0x0000000074A04000-memory.dmp

Filesize
18.3MB

Download
memory/3900-32-0x00000000737B0000-0x0000000074A04000-memory.dmp

Filesize
18.3MB

Download
memory/3900-33-0x0000000000E00000-0x0000000006B7A000-memory.dmp

Filesize
93.5MB

Download
memory/3900-35-0x00000000737B0000-0x0000000074A04000-memory.dmp

Filesize
18.3MB

Download
memory/3900-36-0x00000000737B0000-0x0000000074A04000-memory.dmp

Filesize
18.3MB

Download
memory/3900-37-0x00000000737B0000-0x0000000074A04000-memory.dmp

Filesize
18.3MB

Download
memory/3900-34-0x0000000000E00000-0x0000000006B7A000-memory.dmp

Filesize
93.5MB

Download
memory/3900-38-0x00000000737B0000-0x0000000074A04000-memory.dmp

Filesize
18.3MB

Download
memory/3900-39-0x00000000737B0000-0x0000000074A04000-memory.dmp

Filesize
18.3MB

Download
memory/3900-40-0x00000000737B0000-0x0000000074A04000-memory.dmp

Filesize
18.3MB

Download
memory/3900-41-0x00000000737B0000-0x0000000074A04000-memory.dmp

Filesize
18.3MB

Download
memory/3900-42-0x00000000737B0000-0x0000000074A04000-memory.dmp

Filesize
18.3MB

Download
memory/3900-43-0x00000000737B0000-0x0000000074A04000-memory.dmp

Filesize
18.3MB

Download
memory/3900-44-0x00000000737B0000-0x0000000074A04000-memory.dmp

Filesize
18.3MB

Download
memory/3900-45-0x00000000737B0000-0x0000000074A04000-memory.dmp

Filesize
18.3MB

Download
memory/3900-46-0x00000000737B0000-0x0000000074A04000-memory.dmp

Filesize
18.3MB

Download
memory/3900-28-0x0000000077ED8000-0x0000000077ED9000-memory.dmp

Filesize
4KB

Download
memory/3900-50-0x00000000737B0000-0x0000000074A04000-memory.dmp

Filesize
18.3MB

Download
memory/3900-51-0x00000000737B0000-0x0000000074A04000-memory.dmp

Filesize
18.3MB

Download
memory/3900-52-0x00000000737B0000-0x0000000074A04000-memory.dmp

Filesize
18.3MB

Download
memory/3900-53-0x00000000737B0000-0x0000000074A04000-memory.dmp

Filesize
18.3MB

Download
memory/3900-54-0x00000000737B0000-0x0000000074A04000-memory.dmp

Filesize
18.3MB

Download
memory/3900-78-0x00000000737B0000-0x0000000074A04000-memory.dmp

Filesize
18.3MB

Download
memory/3900-57-0x00000000737B0000-0x0000000074A04000-memory.dmp

Filesize
18.3MB

Download
memory/3900-58-0x00000000737B0000-0x0000000074A04000-memory.dmp

Filesize
18.3MB

Download
memory/3900-59-0x00000000737B0000-0x0000000074A04000-memory.dmp

Filesize
18.3MB

Download
memory/3900-60-0x00000000737B0000-0x0000000074A04000-memory.dmp

Filesize
18.3MB

Download
memory/3900-61-0x00000000737B0000-0x0000000074A04000-memory.dmp

Filesize
18.3MB

Download
memory/3900-62-0x00000000737B0000-0x0000000074A04000-memory.dmp

Filesize
18.3MB

Download
memory/3900-63-0x00000000737B0000-0x0000000074A04000-memory.dmp

Filesize
18.3MB

Download
memory/3900-64-0x00000000737B0000-0x0000000074A04000-memory.dmp

Filesize
18.3MB

Download
memory/3900-65-0x00000000737B0000-0x0000000074A04000-memory.dmp

Filesize
18.3MB

Download
memory/3900-66-0x00000000737B0000-0x0000000074A04000-memory.dmp

Filesize
18.3MB

Download
memory/3900-67-0x00000000737B0000-0x0000000074A04000-memory.dmp

Filesize
18.3MB

Download
memory/3900-68-0x00000000737B0000-0x0000000074A04000-memory.dmp

Filesize
18.3MB

Download
memory/3900-69-0x00000000737B0000-0x0000000074A04000-memory.dmp

Filesize
18.3MB

Download
memory/3900-70-0x00000000737B0000-0x0000000074A04000-memory.dmp

Filesize
18.3MB

Download
memory/3900-71-0x00000000737B0000-0x0000000074A04000-memory.dmp

Filesize
18.3MB

Download
memory/3900-72-0x00000000737B0000-0x0000000074A04000-memory.dmp

Filesize
18.3MB

Download
memory/3900-73-0x00000000737B0000-0x0000000074A04000-memory.dmp

Filesize
18.3MB

Download
memory/3900-74-0x00000000737B0000-0x0000000074A04000-memory.dmp

Filesize
18.3MB

Download
memory/3900-75-0x00000000737B0000-0x0000000074A04000-memory.dmp

Filesize
18.3MB

Download
memory/3900-76-0x00000000737B0000-0x0000000074A04000-memory.dmp

Filesize
18.3MB

Download
memory/3900-77-0x00000000737B0000-0x0000000074A04000-memory.dmp

Filesize
18.3MB

Download
memory/4344-26-0x0000000077E51000-0x0000000077F71000-memory.dmp

Filesize
1.1MB

Download
memory/4344-27-0x0000000074CB0000-0x0000000074CB7000-memory.dmp

Filesize
28KB

Download