b57d694b6d1f9e0634953e8f5c1e4faf84fb50be806a8887dd5b31bfd58a167f

Analysis

max time kernel
149s
max time network
147s
platform
windows7_x64
resource
win7v20201028
submitted
11-02-2021 07:20

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General

Target

Mortgage Description.exe
Size

864KB
MD5

82ff2d4182e8d49b1553cfec4739011c
SHA1

f1605f87331b2c980db3757adcfafb065e318f67
SHA256

b57d694b6d1f9e0634953e8f5c1e4faf84fb50be806a8887dd5b31bfd58a167f
SHA512

85e5e7fab18b096d334d3bf7625e071690f89cd4dffb6c46d30d15f1ec190bfc11c08b8f261d7f59db93fd90e56b4fb84e9efbf99cb779fb6844d4a80772a188

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 4 IoCs

pid	Process
1544	Spread Sheet Reader.exe
1088	InstallUtil.exe
1620	Reader Runtime Processes.exe
1628	Reader Runtime Processes.exe

Loads dropped DLL 4 IoCs

pid	Process
1944	Mortgage Description.exe
1544	Spread Sheet Reader.exe
1544	Spread Sheet Reader.exe
1620	Reader Runtime Processes.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run\Sheet Proffesional Reader = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\Spread Sheet Reader.exe"	reg.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1544 set thread context of 1088	1544	Spread Sheet Reader.exe	33

Suspicious behavior: EnumeratesProcesses 17 IoCs

pid	Process
1944	Mortgage Description.exe
1944	Mortgage Description.exe
1944	Mortgage Description.exe
1544	Spread Sheet Reader.exe
1544	Spread Sheet Reader.exe
1544	Spread Sheet Reader.exe
1544	Spread Sheet Reader.exe
1620	Reader Runtime Processes.exe
1628	Reader Runtime Processes.exe
1628	Reader Runtime Processes.exe
1628	Reader Runtime Processes.exe
1544	Spread Sheet Reader.exe
1544	Spread Sheet Reader.exe
1544	Spread Sheet Reader.exe
1544	Spread Sheet Reader.exe
1544	Spread Sheet Reader.exe
1544	Spread Sheet Reader.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	1944	Mortgage Description.exe
Token: SeDebugPrivilege	1544	Spread Sheet Reader.exe
Token: SeDebugPrivilege	1620	Reader Runtime Processes.exe
Token: SeDebugPrivilege	1628	Reader Runtime Processes.exe
Token: SeDebugPrivilege	1088	InstallUtil.exe
Token: SeDebugPrivilege	1088	InstallUtil.exe

Suspicious use of WriteProcessMemory 31 IoCs

description	pid	Process	procid_target
PID 1944 wrote to memory of 1648	1944	Mortgage Description.exe	29
PID 1944 wrote to memory of 1648	1944	Mortgage Description.exe	29
PID 1944 wrote to memory of 1648	1944	Mortgage Description.exe	29
PID 1944 wrote to memory of 1648	1944	Mortgage Description.exe	29
PID 1648 wrote to memory of 396	1648	cmd.exe	31
PID 1648 wrote to memory of 396	1648	cmd.exe	31
PID 1648 wrote to memory of 396	1648	cmd.exe	31
PID 1648 wrote to memory of 396	1648	cmd.exe	31
PID 1944 wrote to memory of 1544	1944	Mortgage Description.exe	32
PID 1944 wrote to memory of 1544	1944	Mortgage Description.exe	32
PID 1944 wrote to memory of 1544	1944	Mortgage Description.exe	32
PID 1944 wrote to memory of 1544	1944	Mortgage Description.exe	32
PID 1544 wrote to memory of 1088	1544	Spread Sheet Reader.exe	33
PID 1544 wrote to memory of 1088	1544	Spread Sheet Reader.exe	33
PID 1544 wrote to memory of 1088	1544	Spread Sheet Reader.exe	33
PID 1544 wrote to memory of 1088	1544	Spread Sheet Reader.exe	33
PID 1544 wrote to memory of 1088	1544	Spread Sheet Reader.exe	33
PID 1544 wrote to memory of 1088	1544	Spread Sheet Reader.exe	33
PID 1544 wrote to memory of 1088	1544	Spread Sheet Reader.exe	33
PID 1544 wrote to memory of 1088	1544	Spread Sheet Reader.exe	33
PID 1544 wrote to memory of 1088	1544	Spread Sheet Reader.exe	33
PID 1544 wrote to memory of 1088	1544	Spread Sheet Reader.exe	33
PID 1544 wrote to memory of 1088	1544	Spread Sheet Reader.exe	33
PID 1544 wrote to memory of 1620	1544	Spread Sheet Reader.exe	34
PID 1544 wrote to memory of 1620	1544	Spread Sheet Reader.exe	34
PID 1544 wrote to memory of 1620	1544	Spread Sheet Reader.exe	34
PID 1544 wrote to memory of 1620	1544	Spread Sheet Reader.exe	34
PID 1620 wrote to memory of 1628	1620	Reader Runtime Processes.exe	35
PID 1620 wrote to memory of 1628	1620	Reader Runtime Processes.exe	35
PID 1620 wrote to memory of 1628	1620	Reader Runtime Processes.exe	35
PID 1620 wrote to memory of 1628	1620	Reader Runtime Processes.exe	35

C:\Users\Admin\AppData\Local\Temp\Mortgage Description.exe
"C:\Users\Admin\AppData\Local\Temp\Mortgage Description.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1944
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /c REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "Sheet Proffesional Reader" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\Spread Sheet Reader.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1648
- - C:\Windows\SysWOW64\reg.exe
    REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "Sheet Proffesional Reader" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\Spread Sheet Reader.exe"
    3⤵
    - Adds Run key to start application
    PID:396
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\Spread Sheet Reader.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\Spread Sheet Reader.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1544
- - C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
    "C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:1088
- - C:\Users\Admin\AppData\Local\Temp\Reader Runtime Processes.exe
    "C:\Users\Admin\AppData\Local\Temp\Reader Runtime Processes.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1620
  - - C:\Users\Admin\AppData\Local\Temp\Reader Runtime Processes.exe
      "C:\Users\Admin\AppData\Local\Temp\Reader Runtime Processes.exe"
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1628

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Web Service

T1102

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1088-27-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/1088-31-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/1088-30-0x00000000736B0000-0x0000000073D9E000-memory.dmp

Filesize
6.9MB

Download
memory/1088-50-0x0000000004FB0000-0x0000000004FB1000-memory.dmp

Filesize
4KB

Download
memory/1544-16-0x00000000736B0000-0x0000000073D9E000-memory.dmp

Filesize
6.9MB

Download
memory/1544-17-0x0000000000340000-0x0000000000341000-memory.dmp

Filesize
4KB

Download
memory/1544-24-0x0000000001F30000-0x0000000001F31000-memory.dmp

Filesize
4KB

Download
memory/1544-23-0x0000000001F20000-0x0000000001F2B000-memory.dmp

Filesize
44KB

Download
memory/1544-19-0x0000000004520000-0x0000000004521000-memory.dmp

Filesize
4KB

Download
memory/1620-38-0x00000000736B0000-0x0000000073D9E000-memory.dmp

Filesize
6.9MB

Download
memory/1620-39-0x0000000001360000-0x0000000001361000-memory.dmp

Filesize
4KB

Download
memory/1628-45-0x00000000736B0000-0x0000000073D9E000-memory.dmp

Filesize
6.9MB

Download
memory/1944-2-0x00000000742C0000-0x00000000749AE000-memory.dmp

Filesize
6.9MB

Download
memory/1944-3-0x0000000000D30000-0x0000000000D31000-memory.dmp

Filesize
4KB

Download
memory/1944-8-0x00000000004E0000-0x00000000004E1000-memory.dmp

Filesize
4KB

Download
memory/1944-7-0x00000000009A0000-0x00000000009BE000-memory.dmp

Filesize
120KB

Download
memory/1944-5-0x0000000002250000-0x0000000002251000-memory.dmp

Filesize
4KB

Download
memory/1944-11-0x0000000002251000-0x0000000002252000-memory.dmp

Filesize
4KB

Download