449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444

Analysis

max time kernel
200s
max time network
205s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
07/11/2022, 02:47

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General

Target

449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe
Size

334KB
MD5

07bc42f112176ee58bd69c2e299f18b7
SHA1

9dc864c8f329dce1b46a4f7fbebc70f881bd723a
SHA256

449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444
SHA512

431848f761e178c39eb12f376f295d9167ce7ddf74cda60876a5a8c60e29f393779630fd2a211383bd6c1e6c96904b0578a75c9bf201afc812056bae22419dbc
SSDEEP

6144:ZBIRqUi0xUmJCvJtS9RfydY1kRuiaMb3G1ZNl3E6JxLp9eV4AVE9:nIR5i0aSj9FD17vMQHZ9oV49

Score

8^/10

persistence upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4704	server.exe

Modifies Installed Components in the registry 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{MB3JKSW-Y883-WE0K-IY6U-SL6N6I178}\StubPath = "C:\\Windows\\system32\\Large\\server.exe Restart"	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{MB3JKSW-Y883-WE0K-IY6U-SL6N6I178}	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe

UPX packed file 7 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/4784-132-0x0000000014000000-0x0000000014065000-memory.dmp	upx
behavioral2/memory/4784-139-0x0000000014000000-0x0000000014065000-memory.dmp	upx
behavioral2/memory/848-140-0x0000000014000000-0x0000000014065000-memory.dmp	upx
behavioral2/files/0x0007000000022e42-143.dat	upx
behavioral2/files/0x0007000000022e42-145.dat	upx
behavioral2/memory/4704-146-0x0000000014000000-0x0000000014065000-memory.dmp	upx
behavioral2/memory/4704-147-0x0000000014000000-0x0000000014065000-memory.dmp	upx

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\Large\server.exe	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe
File opened for modification	C:\Windows\SysWOW64\Large\server.exe	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Prefetch\Greame RATv1.6Server.pf	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe
File opened for modification	C:\Windows\Prefetch\Greame RATv1.6Server.pf	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe

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

System Information Discovery
T1082

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
848	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	848	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe
Token: SeDebugPrivilege	848	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79
PID 4784 wrote to memory of 848	4784	449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe	79

C:\Users\Admin\AppData\Local\Temp\449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe
"C:\Users\Admin\AppData\Local\Temp\449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe"
1⤵
- Modifies Installed Components in the registry
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:4784
- C:\Users\Admin\AppData\Local\Temp\449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe
  "C:\Users\Admin\AppData\Local\Temp\449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444.exe"
  2⤵
  - Checks computer location settings
  - Drops file in Windows directory
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  PID:848
- - C:\Windows\SysWOW64\Large\server.exe
    "C:\Windows\system32\Large\server.exe"
    3⤵
    - Executes dropped EXE
    PID:4704

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\X-GRY-X.txt

Filesize
289KB

MD5
8a57f631c4a3655733eb64350ed9eaa1

SHA1
235af4e53274d1ed53f89439552836a2511a0f6a

SHA256
35e927bb008b1a8063ca4754feadbd55f3f829994362f8ab242067c0e42e46fd

SHA512
47b2788d561016a985594d3ea18037f44a35065b27788ac668e7aad8643c165be2da1e89da382b57c13f8e98f1cbd54551c5bb0087891e2c5d989777a2393419

Download Submit
C:\Windows\SysWOW64\Large\server.exe

Filesize
334KB

MD5
07bc42f112176ee58bd69c2e299f18b7

SHA1
9dc864c8f329dce1b46a4f7fbebc70f881bd723a

SHA256
449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444

SHA512
431848f761e178c39eb12f376f295d9167ce7ddf74cda60876a5a8c60e29f393779630fd2a211383bd6c1e6c96904b0578a75c9bf201afc812056bae22419dbc

Download Submit
C:\Windows\SysWOW64\Large\server.exe

Filesize
334KB

MD5
07bc42f112176ee58bd69c2e299f18b7

SHA1
9dc864c8f329dce1b46a4f7fbebc70f881bd723a

SHA256
449c8e98e17cc17671bc9458a0a9424175b420bff34649d160858fadfeed0444

SHA512
431848f761e178c39eb12f376f295d9167ce7ddf74cda60876a5a8c60e29f393779630fd2a211383bd6c1e6c96904b0578a75c9bf201afc812056bae22419dbc

Download Submit
memory/848-141-0x0000000024010000-0x000000002406F000-memory.dmp

Filesize
380KB

Download
memory/848-140-0x0000000014000000-0x0000000014065000-memory.dmp

Filesize
404KB

Download
memory/848-138-0x0000000024010000-0x000000002406F000-memory.dmp

Filesize
380KB

Download
memory/848-148-0x0000000024010000-0x000000002406F000-memory.dmp

Filesize
380KB

Download
memory/4704-146-0x0000000014000000-0x0000000014065000-memory.dmp

Filesize
404KB

Download
memory/4704-147-0x0000000014000000-0x0000000014065000-memory.dmp

Filesize
404KB

Download
memory/4784-139-0x0000000014000000-0x0000000014065000-memory.dmp

Filesize
404KB

Download
memory/4784-132-0x0000000014000000-0x0000000014065000-memory.dmp

Filesize
404KB

Download
memory/4784-135-0x0000000024010000-0x000000002406F000-memory.dmp

Filesize
380KB

Download