remcos | 0ee20b2acfcb3b12b9bd00534417a056ceb6c4ec1f754ab4ad718b200db7d76f

General

Target

99a4821ee4a5cc3892355b8d1225ed7f.exe
Size

249KB
MD5

99a4821ee4a5cc3892355b8d1225ed7f
SHA1

0b3d4f0022c7979a5c7a3d73bdc5bd33e12cd209
SHA256

0ee20b2acfcb3b12b9bd00534417a056ceb6c4ec1f754ab4ad718b200db7d76f
SHA512

3962d9edd55fbfc07befac8104745d76c7156d2c73eecd4023761ee6610ac1a4424c8882f71e191d136267926bb4c6cce2ccd32c578739bb0916c95a8e4efd3c
SSDEEP

6144:9xRy5EPEahzwf0gYR5z7eLr4CU0/DN479Y69ZJaIdf2cBN:9xRQf0gipkr4C/Z4pY+aIdf2cBN

Score

10^/10

remcos minimalnew rat rezer0

Malware Config

Extracted

Family

remcos

Version

2.5.0 Pro

Botnet

MinimalNew

C2

u864246.nsupdate.info:2404

u864246.nerdpol.ovh:2404

u864246.tk:2404

rownip.mooo.com:2404

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
logs.dat
keylog_flag
false
keylog_folder
remcos
keylog_path
%AppData%
mouse_option
false
mutex
Fixed-S5LK5J
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
wikipedia;solitaire;

Signatures

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

ReZer0 packer 1 IoCs

Detects ReZer0, a packer with multiple versions used in various campaigns.

rezer0

Processes:

resource	yara_rule
behavioral2/memory/3080-7-0x0000000005F50000-0x0000000005F7E000-memory.dmp	rezer0

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

99a4821ee4a5cc3892355b8d1225ed7f.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	99a4821ee4a5cc3892355b8d1225ed7f.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

99a4821ee4a5cc3892355b8d1225ed7f.exe

description pid process target process

PID 3080 set thread context of 1488 3080 99a4821ee4a5cc3892355b8d1225ed7f.exe 99a4821ee4a5cc3892355b8d1225ed7f.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task/Job
T1053

Processes:

schtasks.exe

pid process

4844 schtasks.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

99a4821ee4a5cc3892355b8d1225ed7f.exe

pid process

3080 99a4821ee4a5cc3892355b8d1225ed7f.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

99a4821ee4a5cc3892355b8d1225ed7f.exe

description pid process

Token: SeDebugPrivilege 3080 99a4821ee4a5cc3892355b8d1225ed7f.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

99a4821ee4a5cc3892355b8d1225ed7f.exe

pid process

1488 99a4821ee4a5cc3892355b8d1225ed7f.exe

description	pid	process	target process
PID 3080 set thread context of 1488	3080	99a4821ee4a5cc3892355b8d1225ed7f.exe	99a4821ee4a5cc3892355b8d1225ed7f.exe

pid	process
4844	schtasks.exe

pid	process
3080	99a4821ee4a5cc3892355b8d1225ed7f.exe

description	pid	process
Token: SeDebugPrivilege	3080	99a4821ee4a5cc3892355b8d1225ed7f.exe

pid	process
1488	99a4821ee4a5cc3892355b8d1225ed7f.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

99a4821ee4a5cc3892355b8d1225ed7f.exe

description	pid	process	target process
PID 3080 wrote to memory of 4844	3080	99a4821ee4a5cc3892355b8d1225ed7f.exe	schtasks.exe
PID 3080 wrote to memory of 4844	3080	99a4821ee4a5cc3892355b8d1225ed7f.exe	schtasks.exe
PID 3080 wrote to memory of 4844	3080	99a4821ee4a5cc3892355b8d1225ed7f.exe	schtasks.exe
PID 3080 wrote to memory of 1488	3080	99a4821ee4a5cc3892355b8d1225ed7f.exe	99a4821ee4a5cc3892355b8d1225ed7f.exe
PID 3080 wrote to memory of 1488	3080	99a4821ee4a5cc3892355b8d1225ed7f.exe	99a4821ee4a5cc3892355b8d1225ed7f.exe
PID 3080 wrote to memory of 1488	3080	99a4821ee4a5cc3892355b8d1225ed7f.exe	99a4821ee4a5cc3892355b8d1225ed7f.exe
PID 3080 wrote to memory of 1488	3080	99a4821ee4a5cc3892355b8d1225ed7f.exe	99a4821ee4a5cc3892355b8d1225ed7f.exe
PID 3080 wrote to memory of 1488	3080	99a4821ee4a5cc3892355b8d1225ed7f.exe	99a4821ee4a5cc3892355b8d1225ed7f.exe
PID 3080 wrote to memory of 1488	3080	99a4821ee4a5cc3892355b8d1225ed7f.exe	99a4821ee4a5cc3892355b8d1225ed7f.exe
PID 3080 wrote to memory of 1488	3080	99a4821ee4a5cc3892355b8d1225ed7f.exe	99a4821ee4a5cc3892355b8d1225ed7f.exe
PID 3080 wrote to memory of 1488	3080	99a4821ee4a5cc3892355b8d1225ed7f.exe	99a4821ee4a5cc3892355b8d1225ed7f.exe
PID 3080 wrote to memory of 1488	3080	99a4821ee4a5cc3892355b8d1225ed7f.exe	99a4821ee4a5cc3892355b8d1225ed7f.exe
PID 3080 wrote to memory of 1488	3080	99a4821ee4a5cc3892355b8d1225ed7f.exe	99a4821ee4a5cc3892355b8d1225ed7f.exe

C:\Users\Admin\AppData\Local\Temp\99a4821ee4a5cc3892355b8d1225ed7f.exe
"C:\Users\Admin\AppData\Local\Temp\99a4821ee4a5cc3892355b8d1225ed7f.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3080

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\XwjhDp" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5870.tmp"
2⤵
- Creates scheduled task(s)
PID:4844

C:\Users\Admin\AppData\Local\Temp\99a4821ee4a5cc3892355b8d1225ed7f.exe
"{path}"
2⤵
- Suspicious use of SetWindowsHookEx
PID:1488

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Scheduled Task/Job

1

T1053

Privilege Escalation

Scheduled Task/Job

1

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp5870.tmp
Filesize
1KB

MD5
4da9bbb7a4666a7cdd3670b6c817c774

SHA1
e27dedaba4bafa36c5b02c111ddc2112ba0c6bac

SHA256
d99b136e588af4f9ed7f2d94be7d90ec912efa624acb327cf4b34bc68bad17f9

SHA512
681942ff0b8dd2cff6dd9f00185bfe19364c38e430b7e8783d056904e3c320b0881eda180cde0f4a9babb1433d42cdd267f24b9703eae3a0a1ce78d76fcff990

Download Submit
memory/1488-18-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1488-16-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1488-24-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1488-22-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1488-13-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1488-21-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1488-20-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/3080-7-0x0000000005F50000-0x0000000005F7E000-memory.dmp

Filesize
184KB

Download
memory/3080-5-0x0000000005980000-0x000000000598A000-memory.dmp

Filesize
40KB

Download
memory/3080-17-0x0000000075330000-0x0000000075AE0000-memory.dmp

Filesize
7.7MB

Download
memory/3080-1-0x0000000075330000-0x0000000075AE0000-memory.dmp

Filesize
7.7MB

Download
memory/3080-0-0x0000000000FE0000-0x0000000001024000-memory.dmp

Filesize
272KB

Download
memory/3080-2-0x0000000005FA0000-0x0000000006544000-memory.dmp

Filesize
5.6MB

Download
memory/3080-6-0x0000000008240000-0x00000000082DC000-memory.dmp

Filesize
624KB

Download
memory/3080-4-0x0000000005B10000-0x0000000005B20000-memory.dmp

Filesize
64KB

Download
memory/3080-3-0x00000000058D0000-0x0000000005962000-memory.dmp

Filesize
584KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads