6dec307953243ac4218ac5bb70fdec783cc40be380254a1402d31e21c14704fd

General

Target

ransom.exe
Size

3.1MB
MD5

7b165424e046c129ed68d167aabaee01
SHA1

0cde2e763fb1e21ea738b3255007ea6dff32f19f
SHA256

6dec307953243ac4218ac5bb70fdec783cc40be380254a1402d31e21c14704fd
SHA512

f0020dbfce6e441f0854b89007c646495ef288b84e3658efa330571cd9aa2a484cb6fb22e776156176a6e8e4fc1b41f1f7271deed33f992723ca38aacca474d7
SSDEEP

49152:suwlfTeFiqtUaqTsuYYq1ibpA4f5uw41doGWo4:QeZndio

Score

6^/10

Malware Config

Signatures

Drops desktop.ini file(s) 7 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\Videos\desktop.ini	ransom.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	ransom.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	ransom.exe
File opened for modification	C:\Users\Admin\Downloads\desktop.ini	ransom.exe
File opened for modification	C:\Users\Admin\Pictures\Camera Roll\desktop.ini	ransom.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	ransom.exe
File opened for modification	C:\Users\Admin\Pictures\Saved Pictures\desktop.ini	ransom.exe

Indicator Removal: File Deletion 1 TTPs
Adversaries may delete files left behind by the actions of their intrusion activity.
defense_evasion

File Deletion
T1070.004

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\Recovery	ReAgentc.exe
File opened for modification	C:\Windows\system32\Recovery\ReAgent.xml	ReAgentc.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Logs\ReAgent\ReAgent.log	ReAgentc.exe
File opened for modification	C:\Windows\Panther\UnattendGC\setuperr.log	ReAgentc.exe
File opened for modification	C:\Windows\Panther\UnattendGC\diagerr.xml	ReAgentc.exe
File opened for modification	C:\Windows\Panther\UnattendGC\diagwrn.xml	ReAgentc.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
1220	powershell.exe
1440	powershell.exe

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000_Classes\.enc	ransom.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000_Classes\.enc\ = "encfile"	ransom.exe
Key created	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000_Classes\encfile\DefaultIcon	ransom.exe
Key created	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000_Classes\encfile	ransom.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000_Classes\encfile\DefaultIcon\ = "C:\\Users\\Admin\\icon.ico"	ransom.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1220	powershell.exe
1220	powershell.exe
1440	powershell.exe
1440	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1220	powershell.exe
Token: SeDebugPrivilege	1440	powershell.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4932 wrote to memory of 512	4932	ransom.exe	88
PID 4932 wrote to memory of 512	4932	ransom.exe	88
PID 512 wrote to memory of 1220	512	cmd.exe	89
PID 512 wrote to memory of 1220	512	cmd.exe	89
PID 4932 wrote to memory of 1440	4932	ransom.exe	92
PID 4932 wrote to memory of 1440	4932	ransom.exe	92
PID 1440 wrote to memory of 2672	1440	powershell.exe	93
PID 1440 wrote to memory of 2672	1440	powershell.exe	93

C:\Users\Admin\AppData\Local\Temp\ransom.exe
"C:\Users\Admin\AppData\Local\Temp\ransom.exe"
1⤵
- Drops desktop.ini file(s)
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4932
- C:\Windows\system32\cmd.exe
  "cmd" /C "powershell -Command \" Stop-Process -Name explorer -Force Remove-Item -Path '$env:localappdata\IconCache.db' -ErrorAction SilentlyContinue Start-Process explorer \""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:512
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell -Command \"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1220
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell" -Command "reagentc.exe /disable"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1440
- - C:\Windows\system32\ReAgentc.exe
    "C:\Windows\system32\ReAgentc.exe" /disable
    3⤵
    - Drops file in System32 directory
    - Drops file in Windows directory
    PID:2672

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Indicator Removal

1

T1070

File Deletion

1

T1070.004

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
77d622bb1a5b250869a3238b9bc1402b

SHA1
d47f4003c2554b9dfc4c16f22460b331886b191b

SHA256
f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

SHA512
d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_twljcqu3.ejo.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1220-266-0x00007FFFAC1D3000-0x00007FFFAC1D5000-memory.dmp

Filesize
8KB

Download
memory/1220-272-0x00000268FDBD0000-0x00000268FDBF2000-memory.dmp

Filesize
136KB

Download
memory/1220-277-0x00007FFFAC1D0000-0x00007FFFACC91000-memory.dmp

Filesize
10.8MB

Download
memory/1220-278-0x00007FFFAC1D0000-0x00007FFFACC91000-memory.dmp

Filesize
10.8MB

Download
memory/1220-279-0x00007FFFAC1D0000-0x00007FFFACC91000-memory.dmp

Filesize
10.8MB

Download
memory/1220-282-0x00007FFFAC1D0000-0x00007FFFACC91000-memory.dmp

Filesize
10.8MB

Download
memory/1440-286-0x00007FFFAC020000-0x00007FFFACAE1000-memory.dmp

Filesize
10.8MB

Download
memory/1440-303-0x00007FFFAC020000-0x00007FFFACAE1000-memory.dmp

Filesize
10.8MB

Download

Analysis

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