203a73bb3ae63756be082fd94a050896bbc14848718426630756f59053245160

Analysis

max time kernel
30s
max time network
17s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
01-08-2024 20:48

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General

Target

203a73bb3ae63756be082fd94a050896bbc14848718426630756f59053245160.exe
Size

135KB
MD5

a15540ba8dbe4fb4644f21d8ffc92c86
SHA1

553f7b3dc6c2fa05a4683fa662d3616e2614966d
SHA256

203a73bb3ae63756be082fd94a050896bbc14848718426630756f59053245160
SHA512

99a9624bac8da8d9bd6936429a0ea783f46782dd1c27b562068656f59c4bc5757cb05691d1850ab20596cf55a976ac7798f57ecf191c4c0b41d993322797098f
SSDEEP

1536:rF0AJELopHG9aa+9qX3apJzAKWYr0v7ioy6paK2AZqMIK7aGZh38Q5:riAyLN9aa+9U2rW1ip6pr2At7NZuQ5

Score

7^/10

discovery persistence upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3052	WwanSvc.exe

Loads dropped DLL 1 IoCs

pid	Process
1520	203a73bb3ae63756be082fd94a050896bbc14848718426630756f59053245160.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x0007000000018710-1.dat	upx
behavioral1/memory/3052-7-0x0000000000D20000-0x0000000000D48000-memory.dmp	upx
behavioral1/memory/1520-5-0x00000000000D0000-0x00000000000F8000-memory.dmp	upx
behavioral1/memory/3052-8-0x0000000000D20000-0x0000000000D48000-memory.dmp	upx
behavioral1/memory/1520-9-0x00000000000D0000-0x00000000000F8000-memory.dmp	upx

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\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Window Update = "\"C:\\ProgramData\\Update\\WwanSvc.exe\" /run"	203a73bb3ae63756be082fd94a050896bbc14848718426630756f59053245160.exe

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	203a73bb3ae63756be082fd94a050896bbc14848718426630756f59053245160.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WwanSvc.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1520 wrote to memory of 3052	1520	203a73bb3ae63756be082fd94a050896bbc14848718426630756f59053245160.exe	30
PID 1520 wrote to memory of 3052	1520	203a73bb3ae63756be082fd94a050896bbc14848718426630756f59053245160.exe	30
PID 1520 wrote to memory of 3052	1520	203a73bb3ae63756be082fd94a050896bbc14848718426630756f59053245160.exe	30
PID 1520 wrote to memory of 3052	1520	203a73bb3ae63756be082fd94a050896bbc14848718426630756f59053245160.exe	30

C:\Users\Admin\AppData\Local\Temp\203a73bb3ae63756be082fd94a050896bbc14848718426630756f59053245160.exe
"C:\Users\Admin\AppData\Local\Temp\203a73bb3ae63756be082fd94a050896bbc14848718426630756f59053245160.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1520
- C:\ProgramData\Update\WwanSvc.exe
  "C:\ProgramData\Update\WwanSvc.exe" /run
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:3052

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

\ProgramData\Update\WwanSvc.exe

Filesize
135KB

MD5
3bed49a573d9ffc7affeae7bf6edebee

SHA1
696bc5dee0e7df7990d1dd42b8accf4d44b05f62

SHA256
33dd76ad6bf4082c194c537f7a8de04dfae605847bf7423e1ba3f0545b9a94dd

SHA512
d7406da3673ad36d9da4c18e58429107246ad8397d4d900a463f23e6c2f516a33aab7f555f1f67f2079559ca89a9ecb34c909369cbabd6a24c08e9db482747ef

Download Submit
memory/1520-6-0x0000000000090000-0x00000000000B8000-memory.dmp

Filesize
160KB

Download
memory/1520-5-0x00000000000D0000-0x00000000000F8000-memory.dmp

Filesize
160KB

Download
memory/1520-9-0x00000000000D0000-0x00000000000F8000-memory.dmp

Filesize
160KB

Download
memory/3052-7-0x0000000000D20000-0x0000000000D48000-memory.dmp

Filesize
160KB

Download
memory/3052-8-0x0000000000D20000-0x0000000000D48000-memory.dmp

Filesize
160KB

Download

Analysis

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General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads