remcos | d07cfaeced4e8bba1c9fdc8006dc80105cf654759c4d74d4d2d2964a0f6e9230

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
22/07/2024, 15:00

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General

Target
MalwareBazaar.exe
Size 2.3MB
Sample240722-sdlftsvakj
SHA256 d07cfaeced4e8bba1c9fdc8006dc80105cf654759c4d74d4d2d2964a0f6e9230
MD5 2a65843b474feff5256bd673b4ff88ae
SHA1 0c80fb17f84d478941ab4d51fddcccaf274da31d
SHA512 7f8a5a684273a031b648129870d493c9a2d63838a8179b8ce32e2c94f956c1a1196ef404d346e6ca42016489fa949b985bc598111dde0249c64c12a668b77292
SSDEEP 49152:E2u/BMdg532rpsjCMqigjns2+a95PlpiH9MzMrcgt4hzNriBldyQJ/MqmG:DrpEZI0BnlJNh
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

remcos dollar man collection rat

Malware Config

Extracted

Family

remcos

Botnet

Dollar Man

178.23.190.118:52499

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-SJ9MVF
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 8 IoCs

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

resource	yara_rule
behavioral1/memory/2864-26-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral1/memory/2864-33-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral1/memory/2764-32-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/2764-25-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/2856-34-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/2856-35-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/2764-40-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/2864-43-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft

NirSoft MailPassView 3 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/2864-26-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral1/memory/2864-33-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral1/memory/2864-43-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral1/memory/2764-32-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral1/memory/2764-25-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral1/memory/2764-40-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	installutil.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2568 set thread context of 592	2568	MalwareBazaar.exe	31
PID 592 set thread context of 2764	592	installutil.exe	32
PID 592 set thread context of 2864	592	installutil.exe	33
PID 592 set thread context of 2856	592	installutil.exe	34

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2764	installutil.exe
2764	installutil.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
592	installutil.exe
592	installutil.exe
592	installutil.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2856	installutil.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
592	installutil.exe

Suspicious use of WriteProcessMemory 40 IoCs

description	pid	Process	procid_target
PID 2568 wrote to memory of 592	2568	MalwareBazaar.exe	31
PID 2568 wrote to memory of 592	2568	MalwareBazaar.exe	31
PID 2568 wrote to memory of 592	2568	MalwareBazaar.exe	31
PID 2568 wrote to memory of 592	2568	MalwareBazaar.exe	31
PID 2568 wrote to memory of 592	2568	MalwareBazaar.exe	31
PID 2568 wrote to memory of 592	2568	MalwareBazaar.exe	31
PID 2568 wrote to memory of 592	2568	MalwareBazaar.exe	31
PID 2568 wrote to memory of 592	2568	MalwareBazaar.exe	31
PID 2568 wrote to memory of 592	2568	MalwareBazaar.exe	31
PID 2568 wrote to memory of 592	2568	MalwareBazaar.exe	31
PID 2568 wrote to memory of 592	2568	MalwareBazaar.exe	31
PID 2568 wrote to memory of 592	2568	MalwareBazaar.exe	31
PID 2568 wrote to memory of 592	2568	MalwareBazaar.exe	31
PID 2568 wrote to memory of 592	2568	MalwareBazaar.exe	31
PID 2568 wrote to memory of 592	2568	MalwareBazaar.exe	31
PID 2568 wrote to memory of 592	2568	MalwareBazaar.exe	31
PID 592 wrote to memory of 2764	592	installutil.exe	32
PID 592 wrote to memory of 2764	592	installutil.exe	32
PID 592 wrote to memory of 2764	592	installutil.exe	32
PID 592 wrote to memory of 2764	592	installutil.exe	32
PID 592 wrote to memory of 2764	592	installutil.exe	32
PID 592 wrote to memory of 2764	592	installutil.exe	32
PID 592 wrote to memory of 2764	592	installutil.exe	32
PID 592 wrote to memory of 2764	592	installutil.exe	32
PID 592 wrote to memory of 2864	592	installutil.exe	33
PID 592 wrote to memory of 2864	592	installutil.exe	33
PID 592 wrote to memory of 2864	592	installutil.exe	33
PID 592 wrote to memory of 2864	592	installutil.exe	33
PID 592 wrote to memory of 2864	592	installutil.exe	33
PID 592 wrote to memory of 2864	592	installutil.exe	33
PID 592 wrote to memory of 2864	592	installutil.exe	33
PID 592 wrote to memory of 2864	592	installutil.exe	33
PID 592 wrote to memory of 2856	592	installutil.exe	34
PID 592 wrote to memory of 2856	592	installutil.exe	34
PID 592 wrote to memory of 2856	592	installutil.exe	34
PID 592 wrote to memory of 2856	592	installutil.exe	34
PID 592 wrote to memory of 2856	592	installutil.exe	34
PID 592 wrote to memory of 2856	592	installutil.exe	34
PID 592 wrote to memory of 2856	592	installutil.exe	34
PID 592 wrote to memory of 2856	592	installutil.exe	34

C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe
"C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2568
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:592
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe /stext "C:\Users\Admin\AppData\Local\Temp\oiekwzowkvnsofygpgtgvwyjsk"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    PID:2764
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe /stext "C:\Users\Admin\AppData\Local\Temp\qkrcxszyydfxqlukzrghgjsatrnae"
    3⤵
    - Accesses Microsoft Outlook accounts
    PID:2864
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe /stext "C:\Users\Admin\AppData\Local\Temp\bewnyksrmlxcaaioibsjjwnrbywjxtes"
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:2856

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

logs.dat

Path C:\ProgramData\remcos\logs.dat
Size 144B
SHA256 1ab837bed631f2dc2ddc5dbfd355e8959c9edbfc0d9c4c93de73b82792269551
MD5 90ee62198320ce4a9e655536714fbb4c
SHA1 8aeaf62de4a9bae1730e846fda07b8677ae7b1c3
SHA512 afb79d6039d767a35ffb801879da70d20319df78f05e0d121b27ac6ce37d8880457d91becf03d2c4adf850fbb5d1bc1349435bc98af47ecb604786fc8f0810b9
MD5 SHA1 SHA512

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oiekwzowkvnsofygpgtgvwyjsk

Path C:\Users\Admin\AppData\Local\Temp\oiekwzowkvnsofygpgtgvwyjsk
Size 2B
SHA256 b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209
MD5 f3b25701fe362ec84616a93a45ce9998
SHA1 d62636d8caec13f04e28442a0a6fa1afeb024bbb
SHA512 98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84
MD5 SHA1 SHA512

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memory/592-49-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/592-68-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/592-7-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/592-4-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/592-9-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/592-10-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/592-11-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/592-12-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/592-14-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/592-84-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/592-54-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/592-83-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/592-76-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/592-51-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/592-75-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/592-2-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/592-50-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/592-67-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/592-0-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/592-47-0x0000000010000000-0x0000000010019000-memory.dmp

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memory/592-8-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/592-48-0x0000000010000000-0x0000000010019000-memory.dmp

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memory/592-60-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/592-3-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/592-59-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/592-44-0x0000000010000000-0x0000000010019000-memory.dmp

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memory/2764-40-0x0000000000400000-0x0000000000478000-memory.dmp

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memory/2764-18-0x0000000000400000-0x0000000000478000-memory.dmp

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memory/2764-22-0x0000000000400000-0x0000000000478000-memory.dmp

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memory/2764-25-0x0000000000400000-0x0000000000478000-memory.dmp

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memory/2764-32-0x0000000000400000-0x0000000000478000-memory.dmp

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memory/2764-15-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

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memory/2856-35-0x0000000000400000-0x0000000000424000-memory.dmp

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memory/2856-34-0x0000000000400000-0x0000000000424000-memory.dmp

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memory/2856-29-0x0000000000400000-0x0000000000424000-memory.dmp

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memory/2856-31-0x0000000000400000-0x0000000000424000-memory.dmp

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memory/2864-43-0x0000000000400000-0x0000000000462000-memory.dmp

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memory/2864-24-0x0000000000400000-0x0000000000462000-memory.dmp

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memory/2864-33-0x0000000000400000-0x0000000000462000-memory.dmp

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memory/2864-26-0x0000000000400000-0x0000000000462000-memory.dmp

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memory/2864-21-0x0000000000400000-0x0000000000462000-memory.dmp

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