b57d694b6d1f9e0634953e8f5c1e4faf84fb50be806a8887dd5b31bfd58a167f

General

Target

Mortgage Description.exe
Size

864KB
MD5

82ff2d4182e8d49b1553cfec4739011c
SHA1

f1605f87331b2c980db3757adcfafb065e318f67
SHA256

b57d694b6d1f9e0634953e8f5c1e4faf84fb50be806a8887dd5b31bfd58a167f
SHA512

85e5e7fab18b096d334d3bf7625e071690f89cd4dffb6c46d30d15f1ec190bfc11c08b8f261d7f59db93fd90e56b4fb84e9efbf99cb779fb6844d4a80772a188

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 4 IoCs

pid	Process
1616	Spread Sheet Reader.exe
3732	InstallUtil.exe
4084	Reader Runtime Processes.exe
588	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-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\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 1616 set thread context of 3732	1616	Spread Sheet Reader.exe	82

Suspicious behavior: EnumeratesProcesses 27 IoCs

pid	Process
580	Mortgage Description.exe
580	Mortgage Description.exe
580	Mortgage Description.exe
580	Mortgage Description.exe
580	Mortgage Description.exe
580	Mortgage Description.exe
580	Mortgage Description.exe
580	Mortgage Description.exe
580	Mortgage Description.exe
580	Mortgage Description.exe
580	Mortgage Description.exe
580	Mortgage Description.exe
580	Mortgage Description.exe
580	Mortgage Description.exe
580	Mortgage Description.exe
1616	Spread Sheet Reader.exe
1616	Spread Sheet Reader.exe
1616	Spread Sheet Reader.exe
1616	Spread Sheet Reader.exe
4084	Reader Runtime Processes.exe
588	Reader Runtime Processes.exe
588	Reader Runtime Processes.exe
588	Reader Runtime Processes.exe
1616	Spread Sheet Reader.exe
1616	Spread Sheet Reader.exe
1616	Spread Sheet Reader.exe
1616	Spread Sheet Reader.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	580	Mortgage Description.exe
Token: SeDebugPrivilege	1616	Spread Sheet Reader.exe
Token: SeDebugPrivilege	4084	Reader Runtime Processes.exe
Token: SeDebugPrivilege	588	Reader Runtime Processes.exe
Token: SeDebugPrivilege	3732	InstallUtil.exe
Token: SeDebugPrivilege	3732	InstallUtil.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 580 wrote to memory of 2620	580	Mortgage Description.exe	75
PID 580 wrote to memory of 2620	580	Mortgage Description.exe	75
PID 580 wrote to memory of 2620	580	Mortgage Description.exe	75
PID 2620 wrote to memory of 3468	2620	cmd.exe	77
PID 2620 wrote to memory of 3468	2620	cmd.exe	77
PID 2620 wrote to memory of 3468	2620	cmd.exe	77
PID 580 wrote to memory of 1616	580	Mortgage Description.exe	81
PID 580 wrote to memory of 1616	580	Mortgage Description.exe	81
PID 580 wrote to memory of 1616	580	Mortgage Description.exe	81
PID 1616 wrote to memory of 3732	1616	Spread Sheet Reader.exe	82
PID 1616 wrote to memory of 3732	1616	Spread Sheet Reader.exe	82
PID 1616 wrote to memory of 3732	1616	Spread Sheet Reader.exe	82
PID 1616 wrote to memory of 3732	1616	Spread Sheet Reader.exe	82
PID 1616 wrote to memory of 3732	1616	Spread Sheet Reader.exe	82
PID 1616 wrote to memory of 3732	1616	Spread Sheet Reader.exe	82
PID 1616 wrote to memory of 3732	1616	Spread Sheet Reader.exe	82
PID 1616 wrote to memory of 4084	1616	Spread Sheet Reader.exe	83
PID 1616 wrote to memory of 4084	1616	Spread Sheet Reader.exe	83
PID 1616 wrote to memory of 4084	1616	Spread Sheet Reader.exe	83
PID 4084 wrote to memory of 588	4084	Reader Runtime Processes.exe	84
PID 4084 wrote to memory of 588	4084	Reader Runtime Processes.exe	84
PID 4084 wrote to memory of 588	4084	Reader Runtime Processes.exe	84

C:\Users\Admin\AppData\Local\Temp\Mortgage Description.exe
"C:\Users\Admin\AppData\Local\Temp\Mortgage Description.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:580
- 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:2620
- - 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:3468
- 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
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1616
- - 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:3732
- - C:\Users\Admin\AppData\Local\Temp\Reader Runtime Processes.exe
    "C:\Users\Admin\AppData\Local\Temp\Reader Runtime Processes.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:4084
  - - 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:588

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

Web Service

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

memory/580-11-0x0000000008FE0000-0x0000000008FE1000-memory.dmp

Filesize
4KB

Download
memory/580-8-0x0000000005710000-0x0000000005711000-memory.dmp

Filesize
4KB

Download
memory/580-14-0x0000000005711000-0x0000000005712000-memory.dmp

Filesize
4KB

Download
memory/580-2-0x0000000073F80000-0x000000007466E000-memory.dmp

Filesize
6.9MB

Download
memory/580-3-0x0000000000DD0000-0x0000000000DD1000-memory.dmp

Filesize
4KB

Download
memory/580-5-0x0000000005BA0000-0x0000000005BA1000-memory.dmp

Filesize
4KB

Download
memory/580-6-0x0000000005740000-0x0000000005741000-memory.dmp

Filesize
4KB

Download
memory/580-7-0x00000000057E0000-0x00000000057E1000-memory.dmp

Filesize
4KB

Download
memory/580-10-0x0000000006A90000-0x0000000006AAE000-memory.dmp

Filesize
120KB

Download
memory/588-49-0x0000000073F80000-0x000000007466E000-memory.dmp

Filesize
6.9MB

Download
memory/1616-24-0x0000000005010000-0x0000000005011000-memory.dmp

Filesize
4KB

Download
memory/1616-30-0x0000000006140000-0x0000000006141000-memory.dmp

Filesize
4KB

Download
memory/1616-29-0x0000000006130000-0x000000000613B000-memory.dmp

Filesize
44KB

Download
memory/1616-28-0x0000000005011000-0x0000000005012000-memory.dmp

Filesize
4KB

Download
memory/1616-18-0x0000000073F80000-0x000000007466E000-memory.dmp

Filesize
6.9MB

Download
memory/3732-35-0x0000000073F80000-0x000000007466E000-memory.dmp

Filesize
6.9MB

Download
memory/3732-50-0x00000000057D0000-0x00000000057D1000-memory.dmp

Filesize
4KB

Download
memory/3732-31-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/3732-56-0x0000000002FC0000-0x0000000002FC1000-memory.dmp

Filesize
4KB

Download
memory/4084-43-0x00000000005E0000-0x00000000005E1000-memory.dmp

Filesize
4KB

Download
memory/4084-42-0x0000000073F80000-0x000000007466E000-memory.dmp

Filesize
6.9MB

Download

Analysis

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