remcos | 42935d2557a1d94823d32a2d9e6017a33f961b9e672292beed123d4b41c81c20

General

Target

PURCHASE_ORDER.exe
Size

1.6MB
MD5

ce5790a8c9abff9f6e605373f64cb9d6
SHA1

38952bb5ce924019cec324793cc4d3c8307af4fa
SHA256

42935d2557a1d94823d32a2d9e6017a33f961b9e672292beed123d4b41c81c20
SHA512

7d1cbbdcc179f52faa6513571f9ccaf622655f1560d24902508b03d04a9f2fa3446d5bb7f4a1b9cc46944778c0b9c17630ea7061206d2d0e0da92cc13acc16b6
SSDEEP

24576:ffmMv6Ckr7Mny5QLh+v0UP7Gm7AIwc/8/fOGu7vJM57icn08nmpMBwHACDEp:f3v+7/5QLhtUP7JkItw0Tq10iKHxW

Score

10^/10

remcos remotehost collection discovery rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

www.projectusf.com: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
false
install_flag
false
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
gfh
mouse_option
false
mutex
Rmc-J91LMC
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
take_screenshot_option
false
take_screenshot_time
5

Signatures

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

Detected Nirsoft tools 3 IoCs

Free utilities often used by attackers which can steal passwords, product keys, etc.

resource	yara_rule
behavioral2/memory/4476-41-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/3116-43-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/1212-42-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/3116-43-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/1212-42-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\PO.vbs	PO.exe

Executes dropped EXE 2 IoCs

pid	Process
2900	PO.exe
1840	PO.exe

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	svchost.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/files/0x000b000000023b9c-5.dat	autoit_exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 1840 set thread context of 32	1840	PO.exe	89
PID 32 set thread context of 1212	32	svchost.exe	93
PID 32 set thread context of 3116	32	svchost.exe	94
PID 32 set thread context of 4476	32	svchost.exe	95

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
3060	1840	WerFault.exe	88

System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PURCHASE_ORDER.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PO.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PO.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1212	svchost.exe
1212	svchost.exe
4476	svchost.exe
4476	svchost.exe
1212	svchost.exe
1212	svchost.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2900	PO.exe
1840	PO.exe
32	svchost.exe
32	svchost.exe
32	svchost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4476	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
32	svchost.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 2792 wrote to memory of 2900	2792	PURCHASE_ORDER.exe	86
PID 2792 wrote to memory of 2900	2792	PURCHASE_ORDER.exe	86
PID 2792 wrote to memory of 2900	2792	PURCHASE_ORDER.exe	86
PID 2900 wrote to memory of 3340	2900	PO.exe	87
PID 2900 wrote to memory of 3340	2900	PO.exe	87
PID 2900 wrote to memory of 3340	2900	PO.exe	87
PID 2900 wrote to memory of 1840	2900	PO.exe	88
PID 2900 wrote to memory of 1840	2900	PO.exe	88
PID 2900 wrote to memory of 1840	2900	PO.exe	88
PID 1840 wrote to memory of 32	1840	PO.exe	89
PID 1840 wrote to memory of 32	1840	PO.exe	89
PID 1840 wrote to memory of 32	1840	PO.exe	89
PID 1840 wrote to memory of 32	1840	PO.exe	89
PID 32 wrote to memory of 1212	32	svchost.exe	93
PID 32 wrote to memory of 1212	32	svchost.exe	93
PID 32 wrote to memory of 1212	32	svchost.exe	93
PID 32 wrote to memory of 1212	32	svchost.exe	93
PID 32 wrote to memory of 3116	32	svchost.exe	94
PID 32 wrote to memory of 3116	32	svchost.exe	94
PID 32 wrote to memory of 3116	32	svchost.exe	94
PID 32 wrote to memory of 3116	32	svchost.exe	94
PID 32 wrote to memory of 4476	32	svchost.exe	95
PID 32 wrote to memory of 4476	32	svchost.exe	95
PID 32 wrote to memory of 4476	32	svchost.exe	95
PID 32 wrote to memory of 4476	32	svchost.exe	95

C:\Users\Admin\AppData\Local\Temp\PURCHASE_ORDER.exe
"C:\Users\Admin\AppData\Local\Temp\PURCHASE_ORDER.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2792
- C:\Users\Admin\AppData\Local\directory\PO.exe
  "C:\Users\Admin\AppData\Local\Temp\PURCHASE_ORDER.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:2900
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\PURCHASE_ORDER.exe"
    3⤵
    PID:3340
- - C:\Users\Admin\AppData\Local\directory\PO.exe
    "C:\Users\Admin\AppData\Local\directory\PO.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of WriteProcessMemory
    PID:1840
  - - C:\Windows\SysWOW64\svchost.exe
      "C:\Users\Admin\AppData\Local\directory\PO.exe"
      4⤵
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious behavior: MapViewOfSection
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:32
    - - C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\lucjkqa"
        5⤵
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        
        PID:1212
    - - C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\vopulilviz"
        5⤵
        Accesses Microsoft Outlook accounts
        System Location Discovery: System Language Discovery
        
        PID:3116
    - - C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\SysWOW64\svchost.exe /stext "C:\Users\Admin\AppData\Local\Temp\yqummaewwhqdbn"
        5⤵
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:4476
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1840 -s 720
      4⤵
      Program crash
      PID:3060

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1840 -ip 1840
1⤵
PID:1652

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\gfh\logs.dat

Filesize
144B

MD5
26909dd2d74add9cb6d464f24fbfd86d

SHA1
02cf4c9980caf1ba21e9f187613af60d6fdec5cb

SHA256
65d95bffc03d42d6507eadfbfd8160c26cceb13533ded49e457c28a2d311e9e9

SHA512
7d4e20a89e19ed38df89396327add4250cbf7db528d5581acd34c9870475a3428436dec303b8f28f964e63f3badbc2a8c42259d0b01c9cca21156c0837a86f81

Download Submit
C:\Users\Admin\AppData\Local\Temp\lucjkqa

Filesize
4KB

MD5
f1d2c01ce674ad7d5bad04197c371fbc

SHA1
4bf0ed04d156a3dc6c8d27e134ecbda76d3585aa

SHA256
25b006032deccd628940ef728fffe83b325a85de453a34691f55f570e4460094

SHA512
81cb982cc33dcc27600a8a681c3ec3cc5b9221b95baa45e1ab24479745a9638b9f31d7beeeb1128b3294ff69b44e958c75e25d565f66790c364665caff96ee77

Download Submit
C:\Users\Admin\AppData\Local\directory\PO.exe

Filesize
1.6MB

MD5
ce5790a8c9abff9f6e605373f64cb9d6

SHA1
38952bb5ce924019cec324793cc4d3c8307af4fa

SHA256
42935d2557a1d94823d32a2d9e6017a33f961b9e672292beed123d4b41c81c20

SHA512
7d1cbbdcc179f52faa6513571f9ccaf622655f1560d24902508b03d04a9f2fa3446d5bb7f4a1b9cc46944778c0b9c17630ea7061206d2d0e0da92cc13acc16b6

Download Submit
memory/32-53-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/32-19-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/32-82-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/32-83-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/32-20-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/32-21-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/32-24-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/32-25-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/32-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/32-27-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/32-29-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/32-28-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/32-31-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/32-34-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/32-75-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/32-74-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/32-18-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/32-66-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/32-17-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/32-59-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/32-58-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/32-54-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/32-52-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/32-49-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/1212-42-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1212-40-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1212-35-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1840-16-0x0000000004150000-0x0000000004550000-memory.dmp

Filesize
4.0MB

Download
memory/2792-2-0x00000000044F0000-0x00000000048F0000-memory.dmp

Filesize
4.0MB

Download
memory/2900-10-0x00000000040A0000-0x00000000044A0000-memory.dmp

Filesize
4.0MB

Download
memory/3116-43-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3116-39-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3116-36-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4476-41-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4476-38-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4476-37-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download

Analysis

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