e7f5caf7fb9fc71cc2b2ff61def36c4a6102608abbcacb875d955eea0d639874

General

Target

MalwareBazaar.exe
Size

482KB
MD5

b873a70cc2a5c13242c4f0287aa6c1b2
SHA1

80213938976c794e4dc16c7b65fbabdab50470ae
SHA256

e7f5caf7fb9fc71cc2b2ff61def36c4a6102608abbcacb875d955eea0d639874
SHA512

fd38cb0872afd874f9a871885965103cad95bd494677ca3f09a99c3681e92fe23db1aa4efdd2bbbbae577fbf2c4f3fa23f49ffd9208050631ebaf3fca2e33e89
SSDEEP

6144:mXIktXfM8Lv86r9uVWAa2je4Z5zl4hgDHQQs4NTQjoHFsAOZZoAX0cNI5Gv:mX7tPMK8ctGe4Dzl4h2QnuPs/ZoFcv

Score

9^/10

collection persistence spyware stealer

Malware Config

Signatures

NirSoft MailPassView 4 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/2896-28-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral1/memory/2896-25-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral1/memory/2896-19-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral1/memory/2896-42-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral1/memory/2916-26-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral1/memory/2916-23-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral1/memory/2916-37-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Nirsoft 10 IoCs

resource	yara_rule
behavioral1/memory/2952-29-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/2896-28-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral1/memory/2952-27-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/2916-26-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/2952-32-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/2896-25-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral1/memory/2916-23-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/2896-19-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral1/memory/2916-37-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/2896-42-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft

Executes dropped EXE 4 IoCs

pid	Process
2396	remcos.exe
2916	remcos.exe
2896	remcos.exe
2952	remcos.exe

Loads dropped DLL 2 IoCs

pid	Process
1652	MalwareBazaar.exe
1652	MalwareBazaar.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3434294380-2554721341-1919518612-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	remcos.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3434294380-2554721341-1919518612-1000\Software\Microsoft\Windows\CurrentVersion\Run\Rmc-KX6RF7 = "\"C:\\ProgramData\\Remcos\\remcos.exe\""	remcos.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3434294380-2554721341-1919518612-1000\Software\Microsoft\Windows\CurrentVersion\Run\Rmc-KX6RF7 = "\"C:\\ProgramData\\Remcos\\remcos.exe\""	MalwareBazaar.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2396 set thread context of 2916	2396	remcos.exe	33
PID 2396 set thread context of 2896	2396	remcos.exe	34
PID 2396 set thread context of 2952	2396	remcos.exe	35

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2916	remcos.exe
2916	remcos.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
2396	remcos.exe
2396	remcos.exe
2396	remcos.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2952	remcos.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 1652 wrote to memory of 2396	1652	MalwareBazaar.exe	31
PID 1652 wrote to memory of 2396	1652	MalwareBazaar.exe	31
PID 1652 wrote to memory of 2396	1652	MalwareBazaar.exe	31
PID 1652 wrote to memory of 2396	1652	MalwareBazaar.exe	31
PID 2396 wrote to memory of 2916	2396	remcos.exe	33
PID 2396 wrote to memory of 2916	2396	remcos.exe	33
PID 2396 wrote to memory of 2916	2396	remcos.exe	33
PID 2396 wrote to memory of 2916	2396	remcos.exe	33
PID 2396 wrote to memory of 2896	2396	remcos.exe	34
PID 2396 wrote to memory of 2896	2396	remcos.exe	34
PID 2396 wrote to memory of 2896	2396	remcos.exe	34
PID 2396 wrote to memory of 2896	2396	remcos.exe	34
PID 2396 wrote to memory of 2952	2396	remcos.exe	35
PID 2396 wrote to memory of 2952	2396	remcos.exe	35
PID 2396 wrote to memory of 2952	2396	remcos.exe	35
PID 2396 wrote to memory of 2952	2396	remcos.exe	35

C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe
"C:\Users\Admin\AppData\Local\Temp\MalwareBazaar.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1652
- C:\ProgramData\Remcos\remcos.exe
  "C:\ProgramData\Remcos\remcos.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:2396
- - C:\ProgramData\Remcos\remcos.exe
    C:\ProgramData\Remcos\remcos.exe /stext "C:\Users\Admin\AppData\Local\Temp\lyncxdcqqytusnacfveoqvuwbff"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    PID:2916
- - C:\ProgramData\Remcos\remcos.exe
    C:\ProgramData\Remcos\remcos.exe /stext "C:\Users\Admin\AppData\Local\Temp\vbauywmreglzubwgxyqqbignkloospv"
    3⤵
    - Executes dropped EXE
    - Accesses Microsoft Outlook accounts
    PID:2896
- - C:\ProgramData\Remcos\remcos.exe
    C:\ProgramData\Remcos\remcos.exe /stext "C:\Users\Admin\AppData\Local\Temp\gvffzoxlsodeehksgjljenbwtsgxlamhwg"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:2952

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\Remcos\remcos.exe

Filesize
482KB

MD5
b873a70cc2a5c13242c4f0287aa6c1b2

SHA1
80213938976c794e4dc16c7b65fbabdab50470ae

SHA256
e7f5caf7fb9fc71cc2b2ff61def36c4a6102608abbcacb875d955eea0d639874

SHA512
fd38cb0872afd874f9a871885965103cad95bd494677ca3f09a99c3681e92fe23db1aa4efdd2bbbbae577fbf2c4f3fa23f49ffd9208050631ebaf3fca2e33e89

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

Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
memory/2396-43-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2396-46-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2396-47-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2896-42-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2896-28-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2896-25-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2896-13-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2896-19-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2896-18-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2916-26-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2916-16-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2916-11-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2916-23-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2916-37-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2952-27-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2952-21-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2952-24-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2952-32-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2952-29-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads