agenttesla | 8babb9a5318d0b2fa43d6c18e91a23a70de547243db91f866e50bb2ff1b7db8b

Analysis

max time kernel
52s
max time network
17s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
30-06-2024 17:05

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General

Target

SpyderCrypter.exe
Size

4.8MB
MD5

b3fb79184d1097420fb68b0240df9660
SHA1

60fcb2b85867b247bb5c622f121e4ab208c7da9c
SHA256

8babb9a5318d0b2fa43d6c18e91a23a70de547243db91f866e50bb2ff1b7db8b
SHA512

130ecef6b8d4418784dafa341277b214693c0d1849e6cf04a87193eb413b3ae0cef7eeb3124494a8bca33ffb2d1b27f875adeadbae1aea3d2ff767710471807e
SSDEEP

98304:FYh322d2m5YhkvxW/gGfoq8Np9qAX7z3z9CW6dwFdkyRYq/:FYhGy2tqvpoT8NvzJTp/

Score

10^/10

agenttesla evasion keylogger spyware stealer themida trojan

Malware Config

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
AgentTesla payload 1 IoCs

Processes:

resource yara_rule

behavioral1/memory/2728-12-0x00000000059F0000-0x0000000005C04000-memory.dmp family_agenttesla
Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Processes:

SpyderCrypter.exe

description ioc process

Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ SpyderCrypter.exe

resource	yara_rule
behavioral1/memory/2728-12-0x00000000059F0000-0x0000000005C04000-memory.dmp	family_agenttesla

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	SpyderCrypter.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

SpyderCrypter.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	SpyderCrypter.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	SpyderCrypter.exe

Executes dropped EXE 1 IoCs

Processes:

SpyderResources.exe

pid process

2516 SpyderResources.exe
Loads dropped DLL 6 IoCs

Processes:

SpyderCrypter.exeWerFault.exe

pid process

2728 SpyderCrypter.exe
2512 WerFault.exe
2512 WerFault.exe
2512 WerFault.exe
2512 WerFault.exe
2512 WerFault.exe
Themida packer 2 IoCs
Detects Themida, an advanced Windows software protection system.
themida

Processes:

resource yara_rule

behavioral1/memory/2728-9-0x0000000001280000-0x0000000001C8C000-memory.dmp themida
behavioral1/memory/2728-10-0x0000000001280000-0x0000000001C8C000-memory.dmp themida
Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

SpyderCrypter.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA SpyderCrypter.exe
Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service
T1102

Processes:

flow ioc

4 raw.githubusercontent.com
5 raw.githubusercontent.com
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

2512 2516 WerFault.exe SpyderResources.exe

pid	process
2516	SpyderResources.exe

pid	process
2728	SpyderCrypter.exe
2512	WerFault.exe
2512	WerFault.exe
2512	WerFault.exe
2512	WerFault.exe
2512	WerFault.exe

resource	yara_rule
behavioral1/memory/2728-9-0x0000000001280000-0x0000000001C8C000-memory.dmp	themida
behavioral1/memory/2728-10-0x0000000001280000-0x0000000001C8C000-memory.dmp	themida

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	SpyderCrypter.exe

flow	ioc
4	raw.githubusercontent.com
5	raw.githubusercontent.com

pid	pid_target	process	target process
2512	2516	WerFault.exe	SpyderResources.exe

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

SpyderCrypter.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS	SpyderCrypter.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer	SpyderCrypter.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemVersion	SpyderCrypter.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

SpyderCrypter.exe

description pid process

Token: SeDebugPrivilege 2728 SpyderCrypter.exe

description	pid	process
Token: SeDebugPrivilege	2728	SpyderCrypter.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

SpyderCrypter.exeSpyderResources.exe

description	pid	process	target process
PID 2728 wrote to memory of 2516	2728	SpyderCrypter.exe	SpyderResources.exe
PID 2728 wrote to memory of 2516	2728	SpyderCrypter.exe	SpyderResources.exe
PID 2728 wrote to memory of 2516	2728	SpyderCrypter.exe	SpyderResources.exe
PID 2728 wrote to memory of 2516	2728	SpyderCrypter.exe	SpyderResources.exe
PID 2516 wrote to memory of 2512	2516	SpyderResources.exe	WerFault.exe
PID 2516 wrote to memory of 2512	2516	SpyderResources.exe	WerFault.exe
PID 2516 wrote to memory of 2512	2516	SpyderResources.exe	WerFault.exe
PID 2516 wrote to memory of 2512	2516	SpyderResources.exe	WerFault.exe

C:\Users\Admin\AppData\Local\Temp\SpyderCrypter.exe
"C:\Users\Admin\AppData\Local\Temp\SpyderCrypter.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Loads dropped DLL
- Checks whether UAC is enabled
- Enumerates system info in registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2728

C:\Users\Admin\AppData\Local\Temp\SpyderResources.exe
"C:\Users\Admin\AppData\Local\Temp\SpyderResources.exe"
2⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:2516

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2516 -s 600
3⤵
- Loads dropped DLL
- Program crash
PID:2512

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

T1102

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\Temp\SpyderResources.exe
Filesize
11KB

MD5
cc132ca7e1cf77db1a3e737260fcf14b

SHA1
f6058656d44e95c23071251b278bc779a88083da

SHA256
4c62d4e150f91dc3fdd1f29c955763c52f357045b1a2edf98ac272631dfdb210

SHA512
52e64fdf7acf08525ddb352b0dd0b6ca3df8d8f13fa09dcd31c270c4e2040f2361c04ba56915cd05539f581df712562537239fbc942131cc725502af6d010fee

Download Submit
memory/2516-32-0x0000000075A30000-0x0000000075A77000-memory.dmp

Filesize
284KB

Download
memory/2516-25-0x00000000001D0000-0x00000000001DA000-memory.dmp

Filesize
40KB

Download
memory/2516-26-0x0000000075A30000-0x0000000075A77000-memory.dmp

Filesize
284KB

Download
memory/2516-24-0x00000000001A0000-0x00000000001BA000-memory.dmp

Filesize
104KB

Download
memory/2516-22-0x0000000000FB0000-0x0000000000FBA000-memory.dmp

Filesize
40KB

Download
memory/2516-23-0x0000000075A30000-0x0000000075A77000-memory.dmp

Filesize
284KB

Download
memory/2728-8-0x0000000075A30000-0x0000000075A77000-memory.dmp

Filesize
284KB

Download
memory/2728-11-0x0000000075A30000-0x0000000075A77000-memory.dmp

Filesize
284KB

Download
memory/2728-12-0x00000000059F0000-0x0000000005C04000-memory.dmp

Filesize
2.1MB

Download
memory/2728-13-0x0000000075A30000-0x0000000075A77000-memory.dmp

Filesize
284KB

Download
memory/2728-14-0x0000000009120000-0x00000000091D0000-memory.dmp

Filesize
704KB

Download
memory/2728-10-0x0000000001280000-0x0000000001C8C000-memory.dmp

Filesize
10.0MB

Download
memory/2728-9-0x0000000001280000-0x0000000001C8C000-memory.dmp

Filesize
10.0MB

Download
memory/2728-4-0x0000000075A30000-0x0000000075A77000-memory.dmp

Filesize
284KB

Download
memory/2728-0-0x0000000001280000-0x0000000001C8C000-memory.dmp

Filesize
10.0MB

Download
memory/2728-1-0x0000000075A3E000-0x0000000075A3F000-memory.dmp

Filesize
4KB

Download
memory/2728-2-0x0000000075A30000-0x0000000075A77000-memory.dmp

Filesize
284KB

Download
memory/2728-3-0x0000000075A30000-0x0000000075A77000-memory.dmp

Filesize
284KB

Download
memory/2728-34-0x0000000075A30000-0x0000000075A77000-memory.dmp

Filesize
284KB

Download