remcos | 0a6b4d008994bb06574688d817089831fc7404e5e458c38e7a1464d072a8fd7a

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
27/10/2022, 23:20

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General

Target
file.exe
Size 622KB
Sample221027-3bewdaeaa2
SHA256 0a6b4d008994bb06574688d817089831fc7404e5e458c38e7a1464d072a8fd7a
MD5 23d5f75391136c6e3fafc24f60c257c1
SHA1 dd46ac624c420a0df7b8a4fdf3aa57dcaf85465e
SHA512 3d6f9af958860576e8de5f340e710beb2d1ec0638fb0660d7af1a79cfcb48ab9a6631c9f6fff41c16a999d25ae02ffc64fbf3dac6195a0d17b8a575b25aba8dd
SSDEEP 12288:kGOUQfnuznoZApJmYDB1+ClalshgWpfPivzv2Ci/1m:kGOUQfn4o+/mYDdLGWpfPirv2NU
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

remcos remotehost collection rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

top.thekillforabuse1.xyz:55988

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
remcos
mouse_option
false
mutex
Rmc-3LSD40
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

Signatures

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

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/3192-153-0x0000000000400000-0x0000000000457000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 2 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/3172-155-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/3172-156-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Nirsoft 4 IoCs

resource	yara_rule
behavioral2/memory/3192-153-0x0000000000400000-0x0000000000457000-memory.dmp	Nirsoft
behavioral2/memory/2188-154-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/3172-155-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/3172-156-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\SyGHHHFstem.exe	Powershell.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\SyGHHHFstem.exe	Powershell.exe

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	RegSvcs.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 4860 set thread context of 700	4860	file.exe	91
PID 700 set thread context of 3172	700	RegSvcs.exe	92
PID 700 set thread context of 3192	700	RegSvcs.exe	95
PID 700 set thread context of 2188	700	RegSvcs.exe	94

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
228	Powershell.exe
228	Powershell.exe
3172	RegSvcs.exe
3172	RegSvcs.exe
2188	RegSvcs.exe
2188	RegSvcs.exe
3172	RegSvcs.exe
3172	RegSvcs.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
700	RegSvcs.exe
700	RegSvcs.exe
700	RegSvcs.exe
700	RegSvcs.exe
700	RegSvcs.exe
700	RegSvcs.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4860	file.exe
Token: SeDebugPrivilege	228	Powershell.exe
Token: SeDebugPrivilege	2188	RegSvcs.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 4860 wrote to memory of 228	4860	file.exe	89
PID 4860 wrote to memory of 228	4860	file.exe	89
PID 4860 wrote to memory of 228	4860	file.exe	89
PID 4860 wrote to memory of 700	4860	file.exe	91
PID 4860 wrote to memory of 700	4860	file.exe	91
PID 4860 wrote to memory of 700	4860	file.exe	91
PID 4860 wrote to memory of 700	4860	file.exe	91
PID 4860 wrote to memory of 700	4860	file.exe	91
PID 4860 wrote to memory of 700	4860	file.exe	91
PID 4860 wrote to memory of 700	4860	file.exe	91
PID 4860 wrote to memory of 700	4860	file.exe	91
PID 4860 wrote to memory of 700	4860	file.exe	91
PID 4860 wrote to memory of 700	4860	file.exe	91
PID 4860 wrote to memory of 700	4860	file.exe	91
PID 4860 wrote to memory of 700	4860	file.exe	91
PID 700 wrote to memory of 3172	700	RegSvcs.exe	92
PID 700 wrote to memory of 3172	700	RegSvcs.exe	92
PID 700 wrote to memory of 3172	700	RegSvcs.exe	92
PID 700 wrote to memory of 3172	700	RegSvcs.exe	92
PID 700 wrote to memory of 1740	700	RegSvcs.exe	97
PID 700 wrote to memory of 1740	700	RegSvcs.exe	97
PID 700 wrote to memory of 1740	700	RegSvcs.exe	97
PID 700 wrote to memory of 4196	700	RegSvcs.exe	96
PID 700 wrote to memory of 4196	700	RegSvcs.exe	96
PID 700 wrote to memory of 4196	700	RegSvcs.exe	96
PID 700 wrote to memory of 4024	700	RegSvcs.exe	93
PID 700 wrote to memory of 4024	700	RegSvcs.exe	93
PID 700 wrote to memory of 4024	700	RegSvcs.exe	93
PID 700 wrote to memory of 3192	700	RegSvcs.exe	95
PID 700 wrote to memory of 3192	700	RegSvcs.exe	95
PID 700 wrote to memory of 3192	700	RegSvcs.exe	95
PID 700 wrote to memory of 3192	700	RegSvcs.exe	95
PID 700 wrote to memory of 2188	700	RegSvcs.exe	94
PID 700 wrote to memory of 2188	700	RegSvcs.exe	94
PID 700 wrote to memory of 2188	700	RegSvcs.exe	94
PID 700 wrote to memory of 2188	700	RegSvcs.exe	94

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4860
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe
  "Powershell" Copy-Item 'C:\Users\Admin\AppData\Local\Temp\file.exe' 'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\SyGHHHFstem.exe'
  2⤵
  - Drops startup file
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:228
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:700
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe /stext "C:\Users\Admin\AppData\Local\Temp\thuj"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    PID:3172
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe /stext "C:\Users\Admin\AppData\Local\Temp\dbacxtb"
    3⤵
    PID:4024
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe /stext "C:\Users\Admin\AppData\Local\Temp\gdnnxluakf"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2188
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe /stext "C:\Users\Admin\AppData\Local\Temp\dbacxtb"
    3⤵
    - Accesses Microsoft Outlook accounts
    PID:3192
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe /stext "C:\Users\Admin\AppData\Local\Temp\dbacxtb"
    3⤵
    PID:4196
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe /stext "C:\Users\Admin\AppData\Local\Temp\dbacxtb"
    3⤵
    PID:1740

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

thuj

Path C:\Users\Admin\AppData\Local\Temp\thuj
Size 4KB
SHA256 76d4066990e2ee2776f733a25ce23e9af545fd6f1a3b5760d603bdc05d9402d5
MD5 30177e1276595fd69ea96b692f49d776
SHA1 75769c29031ca1ad8e175dd700c74b5e35c5b0c7
SHA512 ccdf20174d299de8ec21445faaf4ebe95c04bd7634c9fe138ba54262b754620c2dfd53a5c94b7d53518181d2eab7b5c97d7933d3a66d05220b06aee120893d4b
SSDEEP 48:wvvv0SgxfvvcSgxfdvv0SgxBvv0Sgxakvv0Sg7:mvJgxvxgp1vJgPvJgbvJg7
MD5 SHA1 SHA512 SSDEEP

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memory/228-143-0x0000000005990000-0x00000000059F6000-memory.dmp

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memory/228-159-0x00000000065E0000-0x0000000006602000-memory.dmp

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memory/228-136-0x0000000002740000-0x0000000002776000-memory.dmp

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memory/228-158-0x0000000006570000-0x000000000658A000-memory.dmp

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memory/228-157-0x0000000007020000-0x00000000070B6000-memory.dmp

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memory/228-146-0x0000000006070000-0x000000000608E000-memory.dmp

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memory/228-139-0x00000000052F0000-0x0000000005918000-memory.dmp

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memory/228-144-0x0000000005A70000-0x0000000005AD6000-memory.dmp

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memory/228-142-0x0000000005190000-0x00000000051B2000-memory.dmp

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memory/700-140-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/700-141-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/700-145-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/700-161-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/700-138-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/2188-154-0x0000000000400000-0x0000000000424000-memory.dmp

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memory/3172-156-0x0000000000400000-0x0000000000478000-memory.dmp

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memory/3172-155-0x0000000000400000-0x0000000000478000-memory.dmp

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memory/3192-153-0x0000000000400000-0x0000000000457000-memory.dmp

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memory/4860-134-0x0000000005620000-0x0000000005BC4000-memory.dmp

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memory/4860-133-0x0000000004F70000-0x000000000500C000-memory.dmp

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memory/4860-132-0x00000000005A0000-0x0000000000640000-memory.dmp

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