bbba923927a1db53ce06658cd42d4757ecbfbecfdf4135bedead83bd6a6be991

Analysis

max time kernel
149s
max time network
22s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
07-09-2024 12:35

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General

Target

Trojan.Autorun.ATA_virussign.com_135db4c64a6b4a27efa076ec2289df40.exe
Size

39KB
MD5

135db4c64a6b4a27efa076ec2289df40
SHA1

b13d6638314b59108276821b8d1ea529e4123565
SHA256

bbba923927a1db53ce06658cd42d4757ecbfbecfdf4135bedead83bd6a6be991
SHA512

caa48f868bb8f0b51cc9ad16edea8e5b7939c5c10daa036adc58b1b3760caa739da595d1b1b006a820204ae73dc15479c8a108ba4e3196fb32dcb2db25ecabbf
SSDEEP

768:ePyFZFASe0Ep0EpHZplRpqpd6rqxn4p6vghzwYu7vih9GueIh9j2IoHAjU+Emkcg:e6q10k0EFjed6rqJ+6vghzwYu7vih9GF

Score

7^/10

discovery persistence

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2760	microsofthelp.exe

Executes dropped EXE 1 IoCs

pid	Process
2760	microsofthelp.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe"	Trojan.Autorun.ATA_virussign.com_135db4c64a6b4a27efa076ec2289df40.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\microsofthelp.exe	Trojan.Autorun.ATA_virussign.com_135db4c64a6b4a27efa076ec2289df40.exe
File created	C:\Windows\HidePlugin.dll	microsofthelp.exe

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Trojan.Autorun.ATA_virussign.com_135db4c64a6b4a27efa076ec2289df40.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2188 wrote to memory of 2760	2188	Trojan.Autorun.ATA_virussign.com_135db4c64a6b4a27efa076ec2289df40.exe	30
PID 2188 wrote to memory of 2760	2188	Trojan.Autorun.ATA_virussign.com_135db4c64a6b4a27efa076ec2289df40.exe	30
PID 2188 wrote to memory of 2760	2188	Trojan.Autorun.ATA_virussign.com_135db4c64a6b4a27efa076ec2289df40.exe	30
PID 2188 wrote to memory of 2760	2188	Trojan.Autorun.ATA_virussign.com_135db4c64a6b4a27efa076ec2289df40.exe	30

C:\Users\Admin\AppData\Local\Temp\Trojan.Autorun.ATA_virussign.com_135db4c64a6b4a27efa076ec2289df40.exe
"C:\Users\Admin\AppData\Local\Temp\Trojan.Autorun.ATA_virussign.com_135db4c64a6b4a27efa076ec2289df40.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2188
- C:\Windows\microsofthelp.exe
  "C:\Windows\microsofthelp.exe"
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Drops file in Windows directory
  PID:2760

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\microsofthelp.exe

Filesize
39KB

MD5
a9333a739deba2f60bd8cf5ec4284a97

SHA1
ce0a64d356e0a86a48de25e2c1252cc90b2adbaf

SHA256
7887d8276f61832d2c5aa5c064364e8542f148f317d11a29624de6b25cf5f18e

SHA512
85a416819346a8cbc91384085a45bc64556e33d387b1f54c9ba41abb6f1344bea1184bda7544da148728258e53034825e86a31a1483b934d031855b28ace5842

Download Submit
memory/2188-0-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2188-8-0x0000000000220000-0x000000000022E000-memory.dmp

Filesize
56KB

Download
memory/2188-7-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2760-12-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download

Analysis

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General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads