eacd5ed86a8ddd368a1089c7b97b791258e3eeb89c76c6da829b58d469f654b2

Analysis

max time kernel
119s
max time network
124s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
28/03/2024, 22:56

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General

Target
MrsMajor 3.0.exe
Size 381KB
Sample240328-2wtplaba5t
SHA256 4a75f2db1dbd3c1218bb9994b7e1c690c4edd4e0c1a675de8d2a127611173e69
MD5 35a27d088cd5be278629fae37d464182
SHA1 d5a291fadead1f2a0cf35082012fe6f4bf22a3ab
SHA512 eb0be3026321864bd5bcf53b88dc951711d8c0b4bcbd46800b90ca5116a56dba22452530e29f3ccbbcc43d943bdefc8ed8ca2d31ba2e7e5f0e594f74adba4ab5
SSDEEP 6144:Th3idhONY259BH1DzJ5PzVNtGgc+F9TBd096cTKAsLEbqqbd+VWM8AHiKn9SlXNA:Th3iXPw9Tc6kVXMHHLEf8l7
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

agilenet evasion trojan

Malware Config

Signatures

UAC bypass 3 TTPs 1 IoCs

evasion trojan

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	wscript.exe

Executes dropped EXE 1 IoCs

pid	Process
2904	eulascr.exe

Loads dropped DLL 1 IoCs

pid	Process
2904	eulascr.exe

Obfuscated with Agile.Net obfuscator 3 IoCs

Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

agilenet

resource	yara_rule
behavioral5/files/0x0007000000015c7c-6.dat	agile_net
behavioral5/memory/2904-8-0x0000000001040000-0x000000000106A000-memory.dmp	agile_net
behavioral5/memory/2904-10-0x000000001B360000-0x000000001B3E0000-memory.dmp	agile_net

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2904	eulascr.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2904	eulascr.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1692 wrote to memory of 2704	1692	MrsMajor 3.0.exe	28
PID 1692 wrote to memory of 2704	1692	MrsMajor 3.0.exe	28
PID 1692 wrote to memory of 2704	1692	MrsMajor 3.0.exe	28
PID 2704 wrote to memory of 2904	2704	wscript.exe	29
PID 2704 wrote to memory of 2904	2704	wscript.exe	29
PID 2704 wrote to memory of 2904	2704	wscript.exe	29

System policy modification 1 TTPs 2 IoCs

evasion

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\System	wscript.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	wscript.exe

C:\Users\Admin\AppData\Local\Temp\MrsMajor 3.0.exe
"C:\Users\Admin\AppData\Local\Temp\MrsMajor 3.0.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1692
- C:\Windows\system32\wscript.exe
  "C:\Windows\system32\wscript.exe" C:\Users\Admin\AppData\Local\Temp\8B3F.tmp\8B40.tmp\8B51.vbs //Nologo
  2⤵
  - UAC bypass
  - Suspicious use of WriteProcessMemory
  - System policy modification
  PID:2704
- - C:\Users\Admin\AppData\Local\Temp\8B3F.tmp\eulascr.exe
    "C:\Users\Admin\AppData\Local\Temp\8B3F.tmp\eulascr.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2904

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

8B51.vbs

Path C:\Users\Admin\AppData\Local\Temp\8B3F.tmp\8B40.tmp\8B51.vbs
Size 352B
SHA256 ce95f7eea8b303bc23cfd6e41748ad4e7b5e0f0f1d3bdf390eadb1e354915569
MD5 3b8696ecbb737aad2a763c4eaf62c247
SHA1 4a2d7a2d61d3f4c414b4e5d2933cd404b8f126e5
SHA512 713d9697b892b9dd892537e8a01eab8d0265ebf64867c8beecf7a744321257c2a5c11d4de18fcb486bb69f199422ce3cab8b6afdbe880481c47b06ba8f335beb
MD5 SHA1 SHA512

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eulascr.exe

Path C:\Users\Admin\AppData\Local\Temp\8B3F.tmp\eulascr.exe
Size 143KB
SHA256 2c343174231b55e463ca044d19d47bd5842793c15954583eb340bfd95628516e
MD5 8b1c352450e480d9320fce5e6f2c8713
SHA1 d6bd88bf33de7c5d4e68b233c37cc1540c97bd3a
SHA512 2d8e43b1021da08ed1bf5aff110159e6bc10478102c024371302ccfce595e77fd76794658617b5b52f9a50190db250c1ba486d247d9cd69e4732a768edbb4cbc
SSDEEP 3072:BYAyVvCBHAzfuYLfoG0yBH1UbGsQT5nhAcvLiHiD0QEX5wzDNAMYFNx:BnyVeALvfoLkVUbGso5nhniTP5IAlN
MD5 SHA1 SHA512 SSDEEP

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AgileDotNetRT64.dll

Path \Users\Admin\AppData\Local\Temp\5a530dfd-bc51-4992-a05d-f09d41a331d4\AgileDotNetRT64.dll
Size 75KB
SHA256 adeed015f06efa363d504a18acb671b1db4b20b23664a55c9bc28aef3283ca29
MD5 42b2c266e49a3acd346b91e3b0e638c0
SHA1 2bc52134f03fcc51cb4e0f6c7cf70646b4df7dd1
SHA512 770822fd681a1d98afe03f6fbe5f116321b54c8e2989fb07491811fd29fca5b666f1adf4c6900823af1271e342cacc9293e9db307c4eef852d1a253b00347a81
SSDEEP 1536:mXvHWEbJMwk3HwGTc/1dbJ5xUSns9Ymi5j:ovHsTTI1xUSns9YmEj
MD5 SHA1 SHA512 SSDEEP

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memory/2904-8-0x0000000001040000-0x000000000106A000-memory.dmp

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memory/2904-9-0x000007FEF5740000-0x000007FEF612C000-memory.dmp

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memory/2904-10-0x000000001B360000-0x000000001B3E0000-memory.dmp

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memory/2904-17-0x000007FEF4080000-0x000007FEF41AC000-memory.dmp

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memory/2904-18-0x000000001B360000-0x000000001B3E0000-memory.dmp

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memory/2904-19-0x000007FEF5740000-0x000007FEF612C000-memory.dmp

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