bf39b61cbff03ac0df1be1b806a637cdab1771b21c8d7314968b6ef6a9de5c36

Analysis

max time kernel
143s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
11/06/2024, 02:43

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General

Target
bf39b61cbff03ac0df1be1b806a637cdab1771b21c8d7314968b6ef6a9de5c36.exe
Size 134KB
Sample240611-c73n7ssblk
SHA256 bf39b61cbff03ac0df1be1b806a637cdab1771b21c8d7314968b6ef6a9de5c36
MD5 c86a0c49434f4ad351240b03cd9c84a2
SHA1 a544b88d42549c8ee5cf938047c0ae01482a6107
SHA512 7951f71f207899a15b96bfcfb11819464462ad1d2936aa68a0121df1184c6f9fe208ddb49028c02eb4e02883e52ca174d22700d6e8e5181b2c939bd0f28196ad
SSDEEP 1536:rF0AJELopHG9aa+9qX3apJzAKWYr0v7ioy6paK2AZqMIK7aGZh38QK:riAyLN9aa+9U2rW1ip6pr2At7NZuQK
MD5 SHA1 SHA512 SSDEEP

Score

9^/10

persistence upx

Malware Config

Signatures

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/1952-0-0x0000000000FB0000-0x0000000000FD8000-memory.dmp	UPX
behavioral2/files/0x000800000002351f-3.dat	UPX
behavioral2/memory/2692-5-0x0000000000620000-0x0000000000648000-memory.dmp	UPX
behavioral2/memory/1952-4-0x0000000000FB0000-0x0000000000FD8000-memory.dmp	UPX
behavioral2/memory/2692-7-0x0000000000620000-0x0000000000648000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2692	WwanSvc.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1952-0-0x0000000000FB0000-0x0000000000FD8000-memory.dmp	upx
behavioral2/files/0x000800000002351f-3.dat	upx
behavioral2/memory/2692-5-0x0000000000620000-0x0000000000648000-memory.dmp	upx
behavioral2/memory/1952-4-0x0000000000FB0000-0x0000000000FD8000-memory.dmp	upx
behavioral2/memory/2692-7-0x0000000000620000-0x0000000000648000-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"	bf39b61cbff03ac0df1be1b806a637cdab1771b21c8d7314968b6ef6a9de5c36.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1952 wrote to memory of 2692	1952	bf39b61cbff03ac0df1be1b806a637cdab1771b21c8d7314968b6ef6a9de5c36.exe	90
PID 1952 wrote to memory of 2692	1952	bf39b61cbff03ac0df1be1b806a637cdab1771b21c8d7314968b6ef6a9de5c36.exe	90
PID 1952 wrote to memory of 2692	1952	bf39b61cbff03ac0df1be1b806a637cdab1771b21c8d7314968b6ef6a9de5c36.exe	90

C:\Users\Admin\AppData\Local\Temp\bf39b61cbff03ac0df1be1b806a637cdab1771b21c8d7314968b6ef6a9de5c36.exe
"C:\Users\Admin\AppData\Local\Temp\bf39b61cbff03ac0df1be1b806a637cdab1771b21c8d7314968b6ef6a9de5c36.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1952
- C:\ProgramData\Update\WwanSvc.exe
  "C:\ProgramData\Update\WwanSvc.exe" /run
  2⤵
  - Executes dropped EXE
  PID:2692

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4124,i,5711962389779687290,1245653010537220991,262144 --variations-seed-version --mojo-platform-channel-handle=4040 /prefetch:8
1⤵
PID:2464

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

WwanSvc.exe

Path C:\ProgramData\Update\WwanSvc.exe
Size 134KB
SHA256 4bd7f2147bc199f932aaea04d58e8da53102ba5e9767bd83db23d76590ca5a09
MD5 7b9d4b1d6cbc16d296edec0cd563ea1c
SHA1 5335232cec8d5eb1ed1031cea732690bff9f39d6
SHA512 e479faa9053f1affc850f5f9b1ff42f5d619f92aa37f5396bcf2da589996f12b9e4e484d80bf952cdb52561a89a3fa3eb65e57276a8d12529d9eface36039611
SSDEEP 1536:rF0AJELopHG9aa+9qX3apJzAKWYr0v7ioy6paK2AZqMIK7aGZh38Qt:riAyLN9aa+9U2rW1ip6pr2At7NZuQt
MD5 SHA1 SHA512 SSDEEP

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memory/1952-0-0x0000000000FB0000-0x0000000000FD8000-memory.dmp

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memory/1952-4-0x0000000000FB0000-0x0000000000FD8000-memory.dmp

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memory/2692-5-0x0000000000620000-0x0000000000648000-memory.dmp

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memory/2692-7-0x0000000000620000-0x0000000000648000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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