remcos | ead99bd520bb7e00aad458415eceb22d19b9794a87423d221133b6eb648e3518

General

Target

4f25252833f447d25841d511f067f0e2.exe
Size

249KB
MD5

4f25252833f447d25841d511f067f0e2
SHA1

4024248272075ee5eb92cdca33e47caab3423184
SHA256

ead99bd520bb7e00aad458415eceb22d19b9794a87423d221133b6eb648e3518
SHA512

14a225adeeab2bfde0a321685505b46b50b062f2dffee111941929577df87303ca7fb064efafd83b0e43215d97a32bb0f75e2463ce00ea3a235d5d0e3d427893
SSDEEP

6144:fxRy5EPEahzwf0gYR5z7eLr4CU0/DN479Y69ZJaIdf2cB2:fxRQf0gipkr4C/Z4pY+aIdf2cB2

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
behavioral1/memory/1680-3-0x0000000000B10000-0x0000000000B3E000-memory.dmp	rezer0

Suspicious use of SetThreadContext 1 IoCs

Processes:

4f25252833f447d25841d511f067f0e2.exe

description pid process target process

PID 1680 set thread context of 2828 1680 4f25252833f447d25841d511f067f0e2.exe 4f25252833f447d25841d511f067f0e2.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

2796 schtasks.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

4f25252833f447d25841d511f067f0e2.exe

pid process

1680 4f25252833f447d25841d511f067f0e2.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

4f25252833f447d25841d511f067f0e2.exe

description pid process

Token: SeDebugPrivilege 1680 4f25252833f447d25841d511f067f0e2.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

4f25252833f447d25841d511f067f0e2.exe

pid process

2828 4f25252833f447d25841d511f067f0e2.exe

description	pid	process	target process
PID 1680 set thread context of 2828	1680	4f25252833f447d25841d511f067f0e2.exe	4f25252833f447d25841d511f067f0e2.exe

pid	process
2796	schtasks.exe

pid	process
1680	4f25252833f447d25841d511f067f0e2.exe

description	pid	process
Token: SeDebugPrivilege	1680	4f25252833f447d25841d511f067f0e2.exe

pid	process
2828	4f25252833f447d25841d511f067f0e2.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

4f25252833f447d25841d511f067f0e2.exe

C:\Users\Admin\AppData\Local\Temp\4f25252833f447d25841d511f067f0e2.exe
"C:\Users\Admin\AppData\Local\Temp\4f25252833f447d25841d511f067f0e2.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1680

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\XwjhDp" /XML "C:\Users\Admin\AppData\Local\Temp\tmp4598.tmp"
2⤵
- Creates scheduled task(s)
PID:2796

C:\Users\Admin\AppData\Local\Temp\4f25252833f447d25841d511f067f0e2.exe
"{path}"
2⤵
- Suspicious use of SetWindowsHookEx
PID:2828

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp4598.tmp
Filesize
1KB

MD5
59baebe67b9c37f0e9a923f3a1ea8c7f

SHA1
78ddeec44a082ceefead0495f63655e9ce24e7ab

SHA256
97999db3becb187f7204b144519334c6ede7a73b5818746ca52fa45ad7a89c49

SHA512
66630fb1e19e49553fec63a7a90f069e4de998a3b9c5c69a5f63579abb75e3dfb08a8fd49c20fae8eb8b0fcf06e16cf33fa9b4617f2e8cbb924ceaa19e3cdfaf

Download Submit
memory/1680-0-0x0000000074300000-0x00000000749EE000-memory.dmp

Filesize
6.9MB

Download
memory/1680-1-0x0000000001130000-0x0000000001174000-memory.dmp

Filesize
272KB

Download
memory/1680-2-0x0000000004ED0000-0x0000000004F10000-memory.dmp

Filesize
256KB

Download
memory/1680-3-0x0000000000B10000-0x0000000000B3E000-memory.dmp

Filesize
184KB

Download
memory/1680-9-0x0000000074300000-0x00000000749EE000-memory.dmp

Filesize
6.9MB

Download
memory/1680-10-0x0000000004ED0000-0x0000000004F10000-memory.dmp

Filesize
256KB

Download
memory/1680-27-0x0000000074300000-0x00000000749EE000-memory.dmp

Filesize
6.9MB

Download
memory/2828-14-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2828-21-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2828-12-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2828-15-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2828-16-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2828-17-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2828-19-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2828-13-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2828-22-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2828-23-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2828-25-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2828-26-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2828-11-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2828-29-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download

description	pid	process	target process
PID 1680 wrote to memory of 2796	1680	4f25252833f447d25841d511f067f0e2.exe	schtasks.exe
PID 1680 wrote to memory of 2796	1680	4f25252833f447d25841d511f067f0e2.exe	schtasks.exe
PID 1680 wrote to memory of 2796	1680	4f25252833f447d25841d511f067f0e2.exe	schtasks.exe
PID 1680 wrote to memory of 2796	1680	4f25252833f447d25841d511f067f0e2.exe	schtasks.exe
PID 1680 wrote to memory of 2828	1680	4f25252833f447d25841d511f067f0e2.exe	4f25252833f447d25841d511f067f0e2.exe
PID 1680 wrote to memory of 2828	1680	4f25252833f447d25841d511f067f0e2.exe	4f25252833f447d25841d511f067f0e2.exe
PID 1680 wrote to memory of 2828	1680	4f25252833f447d25841d511f067f0e2.exe	4f25252833f447d25841d511f067f0e2.exe
PID 1680 wrote to memory of 2828	1680	4f25252833f447d25841d511f067f0e2.exe	4f25252833f447d25841d511f067f0e2.exe
PID 1680 wrote to memory of 2828	1680	4f25252833f447d25841d511f067f0e2.exe	4f25252833f447d25841d511f067f0e2.exe
PID 1680 wrote to memory of 2828	1680	4f25252833f447d25841d511f067f0e2.exe	4f25252833f447d25841d511f067f0e2.exe
PID 1680 wrote to memory of 2828	1680	4f25252833f447d25841d511f067f0e2.exe	4f25252833f447d25841d511f067f0e2.exe
PID 1680 wrote to memory of 2828	1680	4f25252833f447d25841d511f067f0e2.exe	4f25252833f447d25841d511f067f0e2.exe
PID 1680 wrote to memory of 2828	1680	4f25252833f447d25841d511f067f0e2.exe	4f25252833f447d25841d511f067f0e2.exe
PID 1680 wrote to memory of 2828	1680	4f25252833f447d25841d511f067f0e2.exe	4f25252833f447d25841d511f067f0e2.exe
PID 1680 wrote to memory of 2828	1680	4f25252833f447d25841d511f067f0e2.exe	4f25252833f447d25841d511f067f0e2.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads