fadb49f75ed91c5de958fc26e52284a556a290cace533dbfad3c41089f7c8453

General

Target

download.exe
Size

469KB
MD5

caf2fd8e96fdffe86728ac3d3baca925
SHA1

9c3d2eeb44669581c5d44bcd52e65390b8afcfa4
SHA256

fadb49f75ed91c5de958fc26e52284a556a290cace533dbfad3c41089f7c8453
SHA512

eb7fdbbedc49285e4705e6e35956dec8b741435a6648f99df762fc8a8f74c3478d3643ed47ef44d2c104cff5da6a0296634cfcea648bd69aed76feaa1c03d810
SSDEEP

12288:Wmnk7iLJbpIpiRL6I2WhSKQ9ZsfZQSLn9:uiLJbpI7I2WhQqZ7L9

Score

9^/10

collection credential_access discovery spyware stealer

Malware Config

Signatures

Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

Detected Nirsoft tools 11 IoCs

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

resource	yara_rule
behavioral1/memory/2940-12-0x0000000000400000-0x0000000000457000-memory.dmp	Nirsoft
behavioral1/memory/2808-11-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/2940-10-0x0000000000400000-0x0000000000457000-memory.dmp	Nirsoft
behavioral1/memory/2808-9-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/2940-8-0x0000000000400000-0x0000000000457000-memory.dmp	Nirsoft
behavioral1/memory/2808-7-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/536-18-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/536-17-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/536-20-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/2808-25-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/2940-29-0x0000000000400000-0x0000000000457000-memory.dmp	Nirsoft

NirSoft MailPassView 4 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/2940-12-0x0000000000400000-0x0000000000457000-memory.dmp	MailPassView
behavioral1/memory/2940-10-0x0000000000400000-0x0000000000457000-memory.dmp	MailPassView
behavioral1/memory/2940-8-0x0000000000400000-0x0000000000457000-memory.dmp	MailPassView
behavioral1/memory/2940-29-0x0000000000400000-0x0000000000457000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 4 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral1/memory/2808-11-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral1/memory/2808-9-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral1/memory/2808-7-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral1/memory/2808-25-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

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-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	download.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2568 set thread context of 2808	2568	download.exe	30
PID 2568 set thread context of 2940	2568	download.exe	31
PID 2568 set thread context of 536	2568	download.exe	32

System Location Discovery: System Language Discovery 1 TTPs 4 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	download.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	download.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	download.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	download.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2808	download.exe
2808	download.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
2568	download.exe
2568	download.exe
2568	download.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	536	download.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2568	download.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2568 wrote to memory of 2808	2568	download.exe	30
PID 2568 wrote to memory of 2808	2568	download.exe	30
PID 2568 wrote to memory of 2808	2568	download.exe	30
PID 2568 wrote to memory of 2808	2568	download.exe	30
PID 2568 wrote to memory of 2940	2568	download.exe	31
PID 2568 wrote to memory of 2940	2568	download.exe	31
PID 2568 wrote to memory of 2940	2568	download.exe	31
PID 2568 wrote to memory of 2940	2568	download.exe	31
PID 2568 wrote to memory of 536	2568	download.exe	32
PID 2568 wrote to memory of 536	2568	download.exe	32
PID 2568 wrote to memory of 536	2568	download.exe	32
PID 2568 wrote to memory of 536	2568	download.exe	32

C:\Users\Admin\AppData\Local\Temp\download.exe
"C:\Users\Admin\AppData\Local\Temp\download.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2568
- C:\Users\Admin\AppData\Local\Temp\download.exe
  C:\Users\Admin\AppData\Local\Temp\download.exe /stext "C:\Users\Admin\AppData\Local\Temp\xtkoqknoerqdjcvhpbvaonnxpcnx"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:2808
- C:\Users\Admin\AppData\Local\Temp\download.exe
  C:\Users\Admin\AppData\Local\Temp\download.exe /stext "C:\Users\Admin\AppData\Local\Temp\zopgrcyhsaiptijtgmiuyaigqjegaje"
  2⤵
  - Accesses Microsoft Outlook accounts
  - System Location Discovery: System Language Discovery
  PID:2940
- C:\Users\Admin\AppData\Local\Temp\download.exe
  C:\Users\Admin\AppData\Local\Temp\download.exe /stext "C:\Users\Admin\AppData\Local\Temp\kqdrsnjjgiauwwfxqxcvjfcxzpogbuvvcp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:536

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
d4d46edce8a193d38d2f6d2e09796fc3

SHA1
a2f077c0e7bc9d3ce20a12e8608a6d24b3a99046

SHA256
2ddb0a6db77b103779798593ce0d843f2693d5fc17ae62fc8fb0c186afa271b1

SHA512
a9abd14e41f38c088431bf6d541394984476f04922e0f14ac3837c55da856dbb0c0bfb086f0f7b53e77bdf06e8338c70b7dd006c791d48b5b44f156b9deb31e8

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

Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
memory/536-16-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/536-17-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/536-13-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/536-20-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/536-18-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2808-11-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2808-1-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2808-9-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2808-25-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2808-7-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2808-4-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2940-12-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/2940-6-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/2940-8-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/2940-10-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/2940-29-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/2940-3-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download

Analysis

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