guloader | 7efed1829051f94d9c430e22e88f59f64350397a1b0d355fd65951aee34d0f13

Analysis

max time kernel
149s
max time network
141s
platform
windows7_x64
resource
win7-20230831-en
resource tags

arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
submitted
18-09-2023 00:51

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General

Target

HAWB eHAWB 1 Copy516328125292121001.exe
Size

663KB
MD5

350558346cfe1dd301a21470193072db
SHA1

967ba98bbc9db9e98a31b5687cfd2fed6567022d
SHA256

7efed1829051f94d9c430e22e88f59f64350397a1b0d355fd65951aee34d0f13
SHA512

1e1156773d19217f27cc15c3f42c07de19d5a7399c8c40fd11ac1bfca931c1b5bc762ad6b51184f558e99c8e2792b023b1dd7a07b4138262e1df30b63de5cd0e
SSDEEP

12288:wbntTHA1OjiQRmIZ1sCLq3LVI4D1wGFP8vyvQTXCTRDer3yv:wbn83yZVLe7hweEy4Tykr3yv

Score

10^/10

guloader remcos crypted discovery downloader rat

Malware Config

Extracted

Family

remcos

Botnet

Crypted

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
alsoetitgs.dat
keylog_flag
false
keylog_path
%AppData%
mouse_option
false
mutex
lksoetiug-30FBYC
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

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

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:

HAWB eHAWB 1 Copy516328125292121001.exeHAWB eHAWB 1 Copy516328125292121001.exe

description	ioc	process
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	HAWB eHAWB 1 Copy516328125292121001.exe
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	HAWB eHAWB 1 Copy516328125292121001.exe

Loads dropped DLL 7 IoCs

Processes:

HAWB eHAWB 1 Copy516328125292121001.exe

pid	process
2220	HAWB eHAWB 1 Copy516328125292121001.exe
2220	HAWB eHAWB 1 Copy516328125292121001.exe
2220	HAWB eHAWB 1 Copy516328125292121001.exe
2220	HAWB eHAWB 1 Copy516328125292121001.exe
2220	HAWB eHAWB 1 Copy516328125292121001.exe
2220	HAWB eHAWB 1 Copy516328125292121001.exe
2220	HAWB eHAWB 1 Copy516328125292121001.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012
Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102
Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

Processes:

HAWB eHAWB 1 Copy516328125292121001.exe

pid process

2356 HAWB eHAWB 1 Copy516328125292121001.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

HAWB eHAWB 1 Copy516328125292121001.exeHAWB eHAWB 1 Copy516328125292121001.exe

pid process

2220 HAWB eHAWB 1 Copy516328125292121001.exe
2356 HAWB eHAWB 1 Copy516328125292121001.exe

pid	process
2356	HAWB eHAWB 1 Copy516328125292121001.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

HAWB eHAWB 1 Copy516328125292121001.exe

description	pid	process	target process
PID 2220 set thread context of 2356	2220	HAWB eHAWB 1 Copy516328125292121001.exe	HAWB eHAWB 1 Copy516328125292121001.exe

Drops file in Windows directory 1 IoCs

Processes:

HAWB eHAWB 1 Copy516328125292121001.exe

description ioc process

File opened for modification C:\Windows\resources\Alanson202.kul HAWB eHAWB 1 Copy516328125292121001.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:

HAWB eHAWB 1 Copy516328125292121001.exe

pid process

2220 HAWB eHAWB 1 Copy516328125292121001.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

HAWB eHAWB 1 Copy516328125292121001.exe

pid process

2356 HAWB eHAWB 1 Copy516328125292121001.exe

description	ioc	process
File opened for modification	C:\Windows\resources\Alanson202.kul	HAWB eHAWB 1 Copy516328125292121001.exe

pid	process
2356	HAWB eHAWB 1 Copy516328125292121001.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

HAWB eHAWB 1 Copy516328125292121001.exe

description	pid	process	target process
PID 2220 wrote to memory of 2356	2220	HAWB eHAWB 1 Copy516328125292121001.exe	HAWB eHAWB 1 Copy516328125292121001.exe
PID 2220 wrote to memory of 2356	2220	HAWB eHAWB 1 Copy516328125292121001.exe	HAWB eHAWB 1 Copy516328125292121001.exe
PID 2220 wrote to memory of 2356	2220	HAWB eHAWB 1 Copy516328125292121001.exe	HAWB eHAWB 1 Copy516328125292121001.exe
PID 2220 wrote to memory of 2356	2220	HAWB eHAWB 1 Copy516328125292121001.exe	HAWB eHAWB 1 Copy516328125292121001.exe
PID 2220 wrote to memory of 2356	2220	HAWB eHAWB 1 Copy516328125292121001.exe	HAWB eHAWB 1 Copy516328125292121001.exe
PID 2220 wrote to memory of 2356	2220	HAWB eHAWB 1 Copy516328125292121001.exe	HAWB eHAWB 1 Copy516328125292121001.exe

C:\Users\Admin\AppData\Local\Temp\HAWB eHAWB 1 Copy516328125292121001.exe
"C:\Users\Admin\AppData\Local\Temp\HAWB eHAWB 1 Copy516328125292121001.exe"
1⤵
- Checks QEMU agent file
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2220

C:\Users\Admin\AppData\Local\Temp\HAWB eHAWB 1 Copy516328125292121001.exe
"C:\Users\Admin\AppData\Local\Temp\HAWB eHAWB 1 Copy516328125292121001.exe"
2⤵
- Checks QEMU agent file
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetWindowsHookEx
PID:2356

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\nsi4B05.tmp\BgImage.dll
Filesize
7KB

MD5
3138dac7ef0377dc6a37ba84dc56badd

SHA1
ec071ccfd71645a8c5d0687f7d12f04ec432dc6c

SHA256
227a52e0785b070baf673c4d97d28ced967c3c01ea62bd1da5f5c593940919db

SHA512
f00ca4983cc7742b4a8fd8bd134952a4a95a73b38ab4015e1faa520b6bee4c925863b299c983a52884b39a8380bb113f25ef305d9cc8c6a87014affe05efc933

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsi4B05.tmp\System.dll
Filesize
11KB

MD5
3f176d1ee13b0d7d6bd92e1c7a0b9bae

SHA1
fe582246792774c2c9dd15639ffa0aca90d6fd0b

SHA256
fa4ab1d6f79fd677433a31ada7806373a789d34328da46ccb0449bbf347bd73e

SHA512
0a69124819b7568d0dea4e9e85ce8fe61c7ba697c934e3a95e2dcfb9f252b1d9da7faf8774b6e8efd614885507acc94987733eba09a2f5e7098b774dfc8524b6

Download Submit
\Users\Admin\AppData\Local\Temp\nsi4B05.tmp\BgImage.dll
Filesize
7KB

MD5
3138dac7ef0377dc6a37ba84dc56badd

SHA1
ec071ccfd71645a8c5d0687f7d12f04ec432dc6c

SHA256
227a52e0785b070baf673c4d97d28ced967c3c01ea62bd1da5f5c593940919db

SHA512
f00ca4983cc7742b4a8fd8bd134952a4a95a73b38ab4015e1faa520b6bee4c925863b299c983a52884b39a8380bb113f25ef305d9cc8c6a87014affe05efc933

Download Submit
\Users\Admin\AppData\Local\Temp\nsi4B05.tmp\BgImage.dll
Filesize
7KB

MD5
3138dac7ef0377dc6a37ba84dc56badd

SHA1
ec071ccfd71645a8c5d0687f7d12f04ec432dc6c

SHA256
227a52e0785b070baf673c4d97d28ced967c3c01ea62bd1da5f5c593940919db

SHA512
f00ca4983cc7742b4a8fd8bd134952a4a95a73b38ab4015e1faa520b6bee4c925863b299c983a52884b39a8380bb113f25ef305d9cc8c6a87014affe05efc933

Download Submit
\Users\Admin\AppData\Local\Temp\nsi4B05.tmp\BgImage.dll
Filesize
7KB

MD5
3138dac7ef0377dc6a37ba84dc56badd

SHA1
ec071ccfd71645a8c5d0687f7d12f04ec432dc6c

SHA256
227a52e0785b070baf673c4d97d28ced967c3c01ea62bd1da5f5c593940919db

SHA512
f00ca4983cc7742b4a8fd8bd134952a4a95a73b38ab4015e1faa520b6bee4c925863b299c983a52884b39a8380bb113f25ef305d9cc8c6a87014affe05efc933

Download Submit
\Users\Admin\AppData\Local\Temp\nsi4B05.tmp\BgImage.dll
Filesize
7KB

MD5
3138dac7ef0377dc6a37ba84dc56badd

SHA1
ec071ccfd71645a8c5d0687f7d12f04ec432dc6c

SHA256
227a52e0785b070baf673c4d97d28ced967c3c01ea62bd1da5f5c593940919db

SHA512
f00ca4983cc7742b4a8fd8bd134952a4a95a73b38ab4015e1faa520b6bee4c925863b299c983a52884b39a8380bb113f25ef305d9cc8c6a87014affe05efc933

Download Submit
\Users\Admin\AppData\Local\Temp\nsi4B05.tmp\BgImage.dll
Filesize
7KB

MD5
3138dac7ef0377dc6a37ba84dc56badd

SHA1
ec071ccfd71645a8c5d0687f7d12f04ec432dc6c

SHA256
227a52e0785b070baf673c4d97d28ced967c3c01ea62bd1da5f5c593940919db

SHA512
f00ca4983cc7742b4a8fd8bd134952a4a95a73b38ab4015e1faa520b6bee4c925863b299c983a52884b39a8380bb113f25ef305d9cc8c6a87014affe05efc933

Download Submit
\Users\Admin\AppData\Local\Temp\nsi4B05.tmp\System.dll
Filesize
11KB

MD5
3f176d1ee13b0d7d6bd92e1c7a0b9bae

SHA1
fe582246792774c2c9dd15639ffa0aca90d6fd0b

SHA256
fa4ab1d6f79fd677433a31ada7806373a789d34328da46ccb0449bbf347bd73e

SHA512
0a69124819b7568d0dea4e9e85ce8fe61c7ba697c934e3a95e2dcfb9f252b1d9da7faf8774b6e8efd614885507acc94987733eba09a2f5e7098b774dfc8524b6

Download Submit
\Users\Admin\AppData\Local\Temp\nsi4B05.tmp\System.dll
Filesize
11KB

MD5
3f176d1ee13b0d7d6bd92e1c7a0b9bae

SHA1
fe582246792774c2c9dd15639ffa0aca90d6fd0b

SHA256
fa4ab1d6f79fd677433a31ada7806373a789d34328da46ccb0449bbf347bd73e

SHA512
0a69124819b7568d0dea4e9e85ce8fe61c7ba697c934e3a95e2dcfb9f252b1d9da7faf8774b6e8efd614885507acc94987733eba09a2f5e7098b774dfc8524b6

Download Submit
memory/2220-48-0x00000000034C0000-0x0000000006584000-memory.dmp

Filesize
48.8MB

Download
memory/2220-49-0x00000000034C0000-0x0000000006584000-memory.dmp

Filesize
48.8MB

Download
memory/2220-50-0x0000000077370000-0x0000000077519000-memory.dmp

Filesize
1.7MB

Download
memory/2220-51-0x0000000077560000-0x0000000077636000-memory.dmp

Filesize
856KB

Download
memory/2220-52-0x0000000010000000-0x0000000010006000-memory.dmp

Filesize
24KB

Download
memory/2356-53-0x00000000007C0000-0x0000000003884000-memory.dmp

Filesize
48.8MB

Download
memory/2356-54-0x0000000077370000-0x0000000077519000-memory.dmp

Filesize
1.7MB

Download
memory/2356-55-0x00000000007C0000-0x0000000003884000-memory.dmp

Filesize
48.8MB

Download
memory/2356-77-0x00000000728F0000-0x0000000073952000-memory.dmp

Filesize
16.4MB

Download
memory/2356-81-0x00000000007C0000-0x0000000003884000-memory.dmp

Filesize
48.8MB

Download
memory/2356-82-0x0000000077370000-0x0000000077519000-memory.dmp

Filesize
1.7MB

Download
memory/2356-84-0x00000000728F0000-0x0000000073952000-memory.dmp

Filesize
16.4MB

Download
memory/2356-87-0x00000000728F0000-0x0000000073952000-memory.dmp

Filesize
16.4MB

Download
memory/2356-88-0x00000000728F0000-0x0000000073952000-memory.dmp

Filesize
16.4MB

Download
memory/2356-89-0x00000000728F0000-0x0000000073952000-memory.dmp

Filesize
16.4MB

Download
memory/2356-90-0x00000000728F0000-0x0000000073952000-memory.dmp

Filesize
16.4MB

Download
memory/2356-91-0x00000000728F0000-0x0000000073952000-memory.dmp

Filesize
16.4MB

Download
memory/2356-92-0x00000000728F0000-0x0000000073952000-memory.dmp

Filesize
16.4MB

Download
memory/2356-93-0x00000000728F0000-0x0000000073952000-memory.dmp

Filesize
16.4MB

Download
memory/2356-94-0x00000000728F0000-0x0000000073952000-memory.dmp

Filesize
16.4MB

Download
memory/2356-95-0x00000000728F0000-0x0000000073952000-memory.dmp

Filesize
16.4MB

Download