38bc13ef112b2f17d4d1a80243fac6a521b5d58228984aae0752d79487fa3b66

Resubmissions

13-02-2025 19:41

250213-yd78gssrap 10

11-02-2025 00:12

250211-ahcqdasrbz 10

08-02-2025 06:10

250208-gw53ea1mhp 10

Analysis

max time kernel
119s
max time network
136s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
11-02-2025 00:12

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General

Target

OnlineInstaller.exe
Size

3.6MB
MD5

4b042bfd9c11ab6a3fb78fa5c34f55d0
SHA1

b0f506640c205d3fbcfe90bde81e49934b870eab
SHA256

59c662a5207c6806046205348b22ee45da3f685fe022556716dbbd6643e61834
SHA512

dae5957c8eee5ae7dd106346f7ea349771b693598f3d4d54abb39940c3d1a0b5731c8d4e07c29377838988a1e93dcd8c2946ce0515af87de61bca6de450409d3
SSDEEP

98304:ghXqJiXwwhwvxR7FI6wYroMUQrYeoFj6bjsKzZx7T7:ghXqsX3hs79bxiEbgKX7

Score

8^/10

discovery

Malware Config

Signatures

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File created	C:\Windows\system32\drivers\iaStorE.sys	OnlineInstaller.tmp

Executes dropped EXE 1 IoCs

pid	Process
2944	OnlineInstaller.tmp

Loads dropped DLL 1 IoCs

pid	Process
2736	OnlineInstaller.exe

Checks for any installed AV software in registry 1 TTPs 1 IoCs

Security Software Discovery

T1518.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Avira	OnlineInstaller.exe

Drops file in System32 directory 6 IoCs

description	ioc	Process
File created	C:\Windows\system32\KeyHook64.dll	OnlineInstaller.tmp
File created	C:\Windows\system32\KH.dat	OnlineInstaller.tmp
File created	C:\Windows\system32\usp20.dll	OnlineInstaller.tmp
File created	C:\Windows\system32\UP.dat	OnlineInstaller.tmp
File created	C:\Windows\system32\spoolsr.exe	OnlineInstaller.tmp
File created	C:\Windows\system32\MS.dat	OnlineInstaller.tmp

System Location Discovery: System Language Discovery 1 TTPs 2 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	OnlineInstaller.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	OnlineInstaller.tmp

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2736	OnlineInstaller.exe
Token: SeLoadDriverPrivilege	2736	OnlineInstaller.exe
Token: SeDebugPrivilege	2944	OnlineInstaller.tmp
Token: SeLoadDriverPrivilege	2944	OnlineInstaller.tmp

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2736 wrote to memory of 2944	2736	OnlineInstaller.exe	30
PID 2736 wrote to memory of 2944	2736	OnlineInstaller.exe	30
PID 2736 wrote to memory of 2944	2736	OnlineInstaller.exe	30
PID 2736 wrote to memory of 2944	2736	OnlineInstaller.exe	30
PID 2736 wrote to memory of 2944	2736	OnlineInstaller.exe	30
PID 2736 wrote to memory of 2944	2736	OnlineInstaller.exe	30
PID 2736 wrote to memory of 2944	2736	OnlineInstaller.exe	30

C:\Users\Admin\AppData\Local\Temp\OnlineInstaller.exe
"C:\Users\Admin\AppData\Local\Temp\OnlineInstaller.exe"
1⤵
- Loads dropped DLL
- Checks for any installed AV software in registry
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2736
- C:\Users\Admin\AppData\Local\Temp\OnlineInstaller.tmp
  C:\Users\Admin\AppData\Local\Temp\OnlineInstaller.tmp -install
  2⤵
  - Drops file in Drivers directory
  - Executes dropped EXE
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:2944

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Software Discovery

T1518

Security Software Discovery

T1518.001

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\OnlineInstaller.tmp

Filesize
3.6MB

MD5
4b042bfd9c11ab6a3fb78fa5c34f55d0

SHA1
b0f506640c205d3fbcfe90bde81e49934b870eab

SHA256
59c662a5207c6806046205348b22ee45da3f685fe022556716dbbd6643e61834

SHA512
dae5957c8eee5ae7dd106346f7ea349771b693598f3d4d54abb39940c3d1a0b5731c8d4e07c29377838988a1e93dcd8c2946ce0515af87de61bca6de450409d3

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