e259017d25afeb189c2835a1e2ae17cd874fb040c7ac15f62e5651f8754bbe41

Analysis

max time kernel
122s
max time network
123s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
25-12-2023 08:54

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General

Target

134cce8f1b8c29cf49d732e310abaebe.exe
Size

169KB
MD5

134cce8f1b8c29cf49d732e310abaebe
SHA1

30a8e6a9f8634694baaf6fe255dab3f8b2970376
SHA256

e259017d25afeb189c2835a1e2ae17cd874fb040c7ac15f62e5651f8754bbe41
SHA512

99e58940834cfbec5997f428b1040a671c931e4abba0e0f5d542432587f2603447b9ace9258fd865212ceefe84bf4cf4e47417f1c84400ba98ee47eaa3d46933
SSDEEP

3072:wzxBux14OFN/l1XyUDVI4F97URnh5xcnWPTAdxboY1fbH/YPo:wutoN5Twx8u/

Score

7^/10

evasion persistence trojan upx

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
1268	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2552	i6g8xs.exe

Loads dropped DLL 2 IoCs

pid	Process
2404	134cce8f1b8c29cf49d732e310abaebe.exe
2404	134cce8f1b8c29cf49d732e310abaebe.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2404-2-0x0000000000400000-0x0000000000432000-memory.dmp	upx
behavioral1/files/0x000c000000015d88-12.dat	upx
behavioral1/memory/2552-15-0x0000000000400000-0x0000000000432000-memory.dmp	upx
behavioral1/files/0x000c000000015d88-11.dat	upx
behavioral1/memory/2404-27-0x0000000000400000-0x0000000000432000-memory.dmp	upx

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\i6g8xs = "C:\\Users\\Admin\\AppData\\Roaming\\i6g8xs.exe"	134cce8f1b8c29cf49d732e310abaebe.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\GrpConv = "grpconv -o"	Rundll32.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	134cce8f1b8c29cf49d732e310abaebe.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\INF\setupapi.app.log	Rundll32.exe

Launches sc.exe 2 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
2656	sc.exe
2660	sc.exe

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

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\Registry\Machine\HARDWARE\DESCRIPTION\System\CentralProcessor\0	runonce.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	runonce.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000\Software\Microsoft\Internet Explorer\Main	134cce8f1b8c29cf49d732e310abaebe.exe

Runs net.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeRestorePrivilege	2156	Rundll32.exe
Token: SeRestorePrivilege	2156	Rundll32.exe
Token: SeRestorePrivilege	2156	Rundll32.exe
Token: SeRestorePrivilege	2156	Rundll32.exe
Token: SeRestorePrivilege	2156	Rundll32.exe
Token: SeRestorePrivilege	2156	Rundll32.exe
Token: SeRestorePrivilege	2156	Rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2404	134cce8f1b8c29cf49d732e310abaebe.exe
2404	134cce8f1b8c29cf49d732e310abaebe.exe
2404	134cce8f1b8c29cf49d732e310abaebe.exe

Suspicious use of WriteProcessMemory 47 IoCs

description	pid	Process	procid_target
PID 2404 wrote to memory of 2636	2404	134cce8f1b8c29cf49d732e310abaebe.exe	22
PID 2404 wrote to memory of 2636	2404	134cce8f1b8c29cf49d732e310abaebe.exe	22
PID 2404 wrote to memory of 2636	2404	134cce8f1b8c29cf49d732e310abaebe.exe	22
PID 2404 wrote to memory of 2636	2404	134cce8f1b8c29cf49d732e310abaebe.exe	22
PID 2404 wrote to memory of 2660	2404	134cce8f1b8c29cf49d732e310abaebe.exe	32
PID 2404 wrote to memory of 2660	2404	134cce8f1b8c29cf49d732e310abaebe.exe	32
PID 2404 wrote to memory of 2660	2404	134cce8f1b8c29cf49d732e310abaebe.exe	32
PID 2404 wrote to memory of 2660	2404	134cce8f1b8c29cf49d732e310abaebe.exe	32
PID 2404 wrote to memory of 2364	2404	134cce8f1b8c29cf49d732e310abaebe.exe	30
PID 2404 wrote to memory of 2364	2404	134cce8f1b8c29cf49d732e310abaebe.exe	30
PID 2404 wrote to memory of 2364	2404	134cce8f1b8c29cf49d732e310abaebe.exe	30
PID 2404 wrote to memory of 2364	2404	134cce8f1b8c29cf49d732e310abaebe.exe	30
PID 2404 wrote to memory of 2656	2404	134cce8f1b8c29cf49d732e310abaebe.exe	28
PID 2404 wrote to memory of 2656	2404	134cce8f1b8c29cf49d732e310abaebe.exe	28
PID 2404 wrote to memory of 2656	2404	134cce8f1b8c29cf49d732e310abaebe.exe	28
PID 2404 wrote to memory of 2656	2404	134cce8f1b8c29cf49d732e310abaebe.exe	28
PID 2404 wrote to memory of 2552	2404	134cce8f1b8c29cf49d732e310abaebe.exe	25
PID 2404 wrote to memory of 2552	2404	134cce8f1b8c29cf49d732e310abaebe.exe	25
PID 2404 wrote to memory of 2552	2404	134cce8f1b8c29cf49d732e310abaebe.exe	25
PID 2404 wrote to memory of 2552	2404	134cce8f1b8c29cf49d732e310abaebe.exe	25
PID 2636 wrote to memory of 2532	2636	net.exe	23
PID 2636 wrote to memory of 2532	2636	net.exe	23
PID 2636 wrote to memory of 2532	2636	net.exe	23
PID 2636 wrote to memory of 2532	2636	net.exe	23
PID 2364 wrote to memory of 664	2364	net.exe	24
PID 2364 wrote to memory of 664	2364	net.exe	24
PID 2364 wrote to memory of 664	2364	net.exe	24
PID 2364 wrote to memory of 664	2364	net.exe	24
PID 2404 wrote to memory of 2156	2404	134cce8f1b8c29cf49d732e310abaebe.exe	44
PID 2404 wrote to memory of 2156	2404	134cce8f1b8c29cf49d732e310abaebe.exe	44
PID 2404 wrote to memory of 2156	2404	134cce8f1b8c29cf49d732e310abaebe.exe	44
PID 2404 wrote to memory of 2156	2404	134cce8f1b8c29cf49d732e310abaebe.exe	44
PID 2404 wrote to memory of 2156	2404	134cce8f1b8c29cf49d732e310abaebe.exe	44
PID 2404 wrote to memory of 2156	2404	134cce8f1b8c29cf49d732e310abaebe.exe	44
PID 2404 wrote to memory of 2156	2404	134cce8f1b8c29cf49d732e310abaebe.exe	44
PID 2156 wrote to memory of 1532	2156	Rundll32.exe	43
PID 2156 wrote to memory of 1532	2156	Rundll32.exe	43
PID 2156 wrote to memory of 1532	2156	Rundll32.exe	43
PID 2156 wrote to memory of 1532	2156	Rundll32.exe	43
PID 2404 wrote to memory of 1268	2404	134cce8f1b8c29cf49d732e310abaebe.exe	42
PID 2404 wrote to memory of 1268	2404	134cce8f1b8c29cf49d732e310abaebe.exe	42
PID 2404 wrote to memory of 1268	2404	134cce8f1b8c29cf49d732e310abaebe.exe	42
PID 2404 wrote to memory of 1268	2404	134cce8f1b8c29cf49d732e310abaebe.exe	42
PID 1532 wrote to memory of 1252	1532	runonce.exe	40
PID 1532 wrote to memory of 1252	1532	runonce.exe	40
PID 1532 wrote to memory of 1252	1532	runonce.exe	40
PID 1532 wrote to memory of 1252	1532	runonce.exe	40

C:\Users\Admin\AppData\Local\Temp\134cce8f1b8c29cf49d732e310abaebe.exe
"C:\Users\Admin\AppData\Local\Temp\134cce8f1b8c29cf49d732e310abaebe.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Checks whether UAC is enabled
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2404
- C:\Windows\SysWOW64\net.exe
  net.exe stop "Security Center"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2636
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "Security Center"
    3⤵
    PID:2532
- C:\Users\Admin\AppData\Roaming\i6g8xs.exe
  C:\Users\Admin\AppData\Roaming\i6g8xs.exe
  2⤵
  - Executes dropped EXE
  PID:2552
- C:\Windows\SysWOW64\sc.exe
  sc config SharedAccess start= DISABLED
  2⤵
  - Launches sc.exe
  PID:2656
- C:\Windows\SysWOW64\net.exe
  net.exe stop "Windows Firewall/Internet Connection Sharing (ICS)"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2364
- C:\Windows\SysWOW64\sc.exe
  sc config wscsvc start= DISABLED
  2⤵
  - Launches sc.exe
  PID:2660
- C:\Windows\SysWOW64\cmd.exe
  cmd /c C:\Users\Admin\AppData\Roaming\a2ga3dk8.bat
  2⤵
  - Deletes itself
  PID:1268
- C:\Windows\SysWOW64\Rundll32.exe
  Rundll32.exe setupapi,InstallHinfSection DefaultInstall 128 C:\Users\Admin\AppData\Roaming\mdinstall.inf
  2⤵
  - Adds Run key to start application
  - Drops file in Windows directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2156

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop "Windows Firewall/Internet Connection Sharing (ICS)"
1⤵
PID:664

C:\Windows\SysWOW64\grpconv.exe
"C:\Windows\System32\grpconv.exe" -o
1⤵
PID:1252

C:\Windows\SysWOW64\runonce.exe
"C:\Windows\system32\runonce.exe" -r
1⤵
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:1532

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

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\a2ga3dk8.bat

Filesize
190B

MD5
f7eaadf43a2093df59d39d2a0e15dd9a

SHA1
3925f9e353123d8f4008a160c459cde085973edd

SHA256
b84e847185cdd7901fff3de98fba72842d1ed9f24b00739ca62eac1acd0ecdbe

SHA512
42697872db54e2e55421204ac26db0675fd816b9af4feba92c861994eebf9d34beb736baaf285e10df0a55d9325417d02c5f9c74bbe937b3c0ab09bdbf24688d

Download Submit
C:\Users\Admin\AppData\Roaming\i6g8xs.exe

Filesize
169KB

MD5
134cce8f1b8c29cf49d732e310abaebe

SHA1
30a8e6a9f8634694baaf6fe255dab3f8b2970376

SHA256
e259017d25afeb189c2835a1e2ae17cd874fb040c7ac15f62e5651f8754bbe41

SHA512
99e58940834cfbec5997f428b1040a671c931e4abba0e0f5d542432587f2603447b9ace9258fd865212ceefe84bf4cf4e47417f1c84400ba98ee47eaa3d46933

Download Submit
C:\Users\Admin\AppData\Roaming\mdinstall.inf

Filesize
410B

MD5
3ccb3b743b0d79505a75476800c90737

SHA1
b5670f123572972883655ef91c69ecc2be987a63

SHA256
5d96bec9bc06fd8d7abc11efbb3cb263844ee0416910f63581dd7848b4e1d8dd

SHA512
09b1cdd4393f515f7569fbccc3f63051823ed7292b6e572bc9a34e4389b727b2914b22118e874864ccb32ef63016b2abd6d84510fd46fdee712fd84be59c114e

Download Submit
memory/2404-2-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/2404-4-0x0000000004190000-0x00000000042C5000-memory.dmp

Filesize
1.2MB

Download
memory/2404-3-0x0000000003E40000-0x0000000004187000-memory.dmp

Filesize
3.3MB

Download
memory/2404-14-0x0000000004E60000-0x0000000004E92000-memory.dmp

Filesize
200KB

Download
memory/2404-27-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/2552-15-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads