remcos | b2ae69e681c120901c4f5f839125d81b53eabd3f22c0a50547604c15d43a33f3

Analysis

max time kernel
90s
max time network
99s
platform
windows11-21h2_x64
resource
win11-20240426-en
resource tags

arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system
submitted
14/05/2024, 07:14

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General

Target

b2ae69e681c120901c4f5f839125d81b53eabd3f22c0a50547604c15d43a33f3.exe
Size

978KB
MD5

1299c227f71353022f7ed366f9efb219
SHA1

b8437949812bd190d66b656cdf99625243e0740f
SHA256

b2ae69e681c120901c4f5f839125d81b53eabd3f22c0a50547604c15d43a33f3
SHA512

0e5276521830eab912247cead3adb5465cd2ad9fdb784999f189c8c854c541f6a671a3bfdce7880fd6c7b4e232c22cb57cfb288a3c71957ee858f1c354c5e26d
SSDEEP

24576:fpBWNjpkskxRDqaCgqxR+0B1ONqvtad0uFb0LbsC1H+imSe9:RBWNjpkskxRDqaCgqX+0B1ONqvtY0uqW

Score

10^/10

remcos execution rat

Malware Config

Signatures

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

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
5044	powershell.exe
2856	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1972 set thread context of 4136	1972	b2ae69e681c120901c4f5f839125d81b53eabd3f22c0a50547604c15d43a33f3.exe	89

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1232	4136	WerFault.exe	89

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

pid	Process
1220	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2856	powershell.exe
5044	powershell.exe
2856	powershell.exe
5044	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2856	powershell.exe
Token: SeDebugPrivilege	5044	powershell.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1972 wrote to memory of 2856	1972	b2ae69e681c120901c4f5f839125d81b53eabd3f22c0a50547604c15d43a33f3.exe	83
PID 1972 wrote to memory of 2856	1972	b2ae69e681c120901c4f5f839125d81b53eabd3f22c0a50547604c15d43a33f3.exe	83
PID 1972 wrote to memory of 2856	1972	b2ae69e681c120901c4f5f839125d81b53eabd3f22c0a50547604c15d43a33f3.exe	83
PID 1972 wrote to memory of 5044	1972	b2ae69e681c120901c4f5f839125d81b53eabd3f22c0a50547604c15d43a33f3.exe	85
PID 1972 wrote to memory of 5044	1972	b2ae69e681c120901c4f5f839125d81b53eabd3f22c0a50547604c15d43a33f3.exe	85
PID 1972 wrote to memory of 5044	1972	b2ae69e681c120901c4f5f839125d81b53eabd3f22c0a50547604c15d43a33f3.exe	85
PID 1972 wrote to memory of 1220	1972	b2ae69e681c120901c4f5f839125d81b53eabd3f22c0a50547604c15d43a33f3.exe	87
PID 1972 wrote to memory of 1220	1972	b2ae69e681c120901c4f5f839125d81b53eabd3f22c0a50547604c15d43a33f3.exe	87
PID 1972 wrote to memory of 1220	1972	b2ae69e681c120901c4f5f839125d81b53eabd3f22c0a50547604c15d43a33f3.exe	87
PID 1972 wrote to memory of 4136	1972	b2ae69e681c120901c4f5f839125d81b53eabd3f22c0a50547604c15d43a33f3.exe	89
PID 1972 wrote to memory of 4136	1972	b2ae69e681c120901c4f5f839125d81b53eabd3f22c0a50547604c15d43a33f3.exe	89
PID 1972 wrote to memory of 4136	1972	b2ae69e681c120901c4f5f839125d81b53eabd3f22c0a50547604c15d43a33f3.exe	89
PID 1972 wrote to memory of 4136	1972	b2ae69e681c120901c4f5f839125d81b53eabd3f22c0a50547604c15d43a33f3.exe	89
PID 1972 wrote to memory of 4136	1972	b2ae69e681c120901c4f5f839125d81b53eabd3f22c0a50547604c15d43a33f3.exe	89
PID 1972 wrote to memory of 4136	1972	b2ae69e681c120901c4f5f839125d81b53eabd3f22c0a50547604c15d43a33f3.exe	89
PID 1972 wrote to memory of 4136	1972	b2ae69e681c120901c4f5f839125d81b53eabd3f22c0a50547604c15d43a33f3.exe	89
PID 1972 wrote to memory of 4136	1972	b2ae69e681c120901c4f5f839125d81b53eabd3f22c0a50547604c15d43a33f3.exe	89
PID 1972 wrote to memory of 4136	1972	b2ae69e681c120901c4f5f839125d81b53eabd3f22c0a50547604c15d43a33f3.exe	89
PID 1972 wrote to memory of 4136	1972	b2ae69e681c120901c4f5f839125d81b53eabd3f22c0a50547604c15d43a33f3.exe	89
PID 1972 wrote to memory of 4136	1972	b2ae69e681c120901c4f5f839125d81b53eabd3f22c0a50547604c15d43a33f3.exe	89
PID 1972 wrote to memory of 4136	1972	b2ae69e681c120901c4f5f839125d81b53eabd3f22c0a50547604c15d43a33f3.exe	89

C:\Users\Admin\AppData\Local\Temp\b2ae69e681c120901c4f5f839125d81b53eabd3f22c0a50547604c15d43a33f3.exe
"C:\Users\Admin\AppData\Local\Temp\b2ae69e681c120901c4f5f839125d81b53eabd3f22c0a50547604c15d43a33f3.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1972
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\b2ae69e681c120901c4f5f839125d81b53eabd3f22c0a50547604c15d43a33f3.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2856
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\jGiHPUkzfFmtq.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5044
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\jGiHPUkzfFmtq" /XML "C:\Users\Admin\AppData\Local\Temp\tmp755F.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1220
- C:\Users\Admin\AppData\Local\Temp\b2ae69e681c120901c4f5f839125d81b53eabd3f22c0a50547604c15d43a33f3.exe
  "C:\Users\Admin\AppData\Local\Temp\b2ae69e681c120901c4f5f839125d81b53eabd3f22c0a50547604c15d43a33f3.exe"
  2⤵
  PID:4136
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4136 -s 592
    3⤵
    - Program crash
    PID:1232

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 4136 -ip 4136
1⤵
PID:2864

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
d0c46cad6c0778401e21910bd6b56b70

SHA1
7be418951ea96326aca445b8dfe449b2bfa0dca6

SHA256
9600b3fdf0565ccb49e21656aa4b24d7c18f776bfd04d9ee984b134707550f02

SHA512
057531b468f7fbbb2175a696a8aab274dec0d17d9f71df309edcff35e064f3378050066a3df47ccd03048fac461594ec75e3d4fe64f9dd79949d129f51e02949

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
18KB

MD5
b21c731165ed269111b6abb1efc1994b

SHA1
18fb19f7c90538af5066886a27a3c460739a7ad6

SHA256
dc16eb4683297547a7c2989ed4e258b6d739602f5c88dfd691023cfca6fa4251

SHA512
748e482479c77b5ce43345cdad821d6465304305b6a0eb7f7f377ce25d0a4cd89d424c88b69f653d5b388704b4b9485e13b690760809ffcd77eeb982f2f724a8

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_qad0japu.2fn.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp755F.tmp

Filesize
1KB

MD5
2347aa57b3664dc789260aa2c9af8b48

SHA1
55156c74b8592a72307d891c9ba537b576cac0af

SHA256
d532b9face5a2ad416c5ca2d1597a41af1f935fac6358161f8c9f61036d85d24

SHA512
09e64da2a02b0091821d08c5953164f815e23bd986c23cadde6d64d137eb0a35ed42ed7b29e8654e94a6d923eeb89ca4db31df7485a0e85e7a31038ecb22c56a

Download Submit
memory/1972-11-0x0000000006EA0000-0x0000000006F60000-memory.dmp

Filesize
768KB

Download
memory/1972-4-0x00000000051E0000-0x0000000005537000-memory.dmp

Filesize
3.3MB

Download
memory/1972-1-0x0000000000580000-0x000000000067A000-memory.dmp

Filesize
1000KB

Download
memory/1972-6-0x0000000005D60000-0x0000000005DFC000-memory.dmp

Filesize
624KB

Download
memory/1972-8-0x0000000006D20000-0x0000000006D40000-memory.dmp

Filesize
128KB

Download
memory/1972-9-0x0000000006880000-0x0000000006890000-memory.dmp

Filesize
64KB

Download
memory/1972-10-0x0000000006890000-0x00000000068A6000-memory.dmp

Filesize
88KB

Download
memory/1972-0-0x000000007464E000-0x000000007464F000-memory.dmp

Filesize
4KB

Download
memory/1972-2-0x00000000056F0000-0x0000000005C96000-memory.dmp

Filesize
5.6MB

Download
memory/1972-7-0x0000000074640000-0x0000000074DF1000-memory.dmp

Filesize
7.7MB

Download
memory/1972-45-0x0000000074640000-0x0000000074DF1000-memory.dmp

Filesize
7.7MB

Download
memory/1972-5-0x0000000005CA0000-0x0000000005CAA000-memory.dmp

Filesize
40KB

Download
memory/1972-3-0x0000000005140000-0x00000000051D2000-memory.dmp

Filesize
584KB

Download
memory/2856-19-0x0000000074640000-0x0000000074DF1000-memory.dmp

Filesize
7.7MB

Download
memory/2856-66-0x0000000006D60000-0x0000000006D7A000-memory.dmp

Filesize
104KB

Download
memory/2856-22-0x0000000004C00000-0x0000000004C66000-memory.dmp

Filesize
408KB

Download
memory/2856-83-0x0000000074640000-0x0000000074DF1000-memory.dmp

Filesize
7.7MB

Download
memory/2856-46-0x0000000005A10000-0x0000000005A2E000-memory.dmp

Filesize
120KB

Download
memory/2856-20-0x0000000004B60000-0x0000000004B82000-memory.dmp

Filesize
136KB

Download
memory/2856-16-0x0000000000A50000-0x0000000000A86000-memory.dmp

Filesize
216KB

Download
memory/2856-77-0x00000000070A0000-0x00000000070A8000-memory.dmp

Filesize
32KB

Download
memory/2856-18-0x0000000004DA0000-0x00000000053CA000-memory.dmp

Filesize
6.2MB

Download
memory/2856-17-0x0000000074640000-0x0000000074DF1000-memory.dmp

Filesize
7.7MB

Download
memory/2856-47-0x0000000005CC0000-0x0000000005D0C000-memory.dmp

Filesize
304KB

Download
memory/2856-48-0x0000000006BD0000-0x0000000006C04000-memory.dmp

Filesize
208KB

Download
memory/2856-49-0x0000000070680000-0x00000000706CC000-memory.dmp

Filesize
304KB

Download
memory/2856-58-0x0000000005FD0000-0x0000000005FEE000-memory.dmp

Filesize
120KB

Download
memory/2856-59-0x0000000006C10000-0x0000000006CB4000-memory.dmp

Filesize
656KB

Download
memory/2856-23-0x00000000053D0000-0x0000000005436000-memory.dmp

Filesize
408KB

Download
memory/2856-76-0x00000000070B0000-0x00000000070CA000-memory.dmp

Filesize
104KB

Download
memory/2856-60-0x00000000073A0000-0x0000000007A1A000-memory.dmp

Filesize
6.5MB

Download
memory/2856-71-0x0000000006DE0000-0x0000000006DEA000-memory.dmp

Filesize
40KB

Download
memory/2856-72-0x0000000006FF0000-0x0000000007086000-memory.dmp

Filesize
600KB

Download
memory/2856-73-0x0000000006F70000-0x0000000006F81000-memory.dmp

Filesize
68KB

Download
memory/4136-42-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4136-43-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/5044-74-0x0000000007D50000-0x0000000007D5E000-memory.dmp

Filesize
56KB

Download
memory/5044-75-0x0000000007D60000-0x0000000007D75000-memory.dmp

Filesize
84KB

Download
memory/5044-61-0x0000000070680000-0x00000000706CC000-memory.dmp

Filesize
304KB

Download
memory/5044-25-0x0000000074640000-0x0000000074DF1000-memory.dmp

Filesize
7.7MB

Download
memory/5044-84-0x0000000074640000-0x0000000074DF1000-memory.dmp

Filesize
7.7MB

Download
memory/5044-21-0x0000000074640000-0x0000000074DF1000-memory.dmp

Filesize
7.7MB

Download