b5edf17fc0400f93627aa9f042f3abf2a52fdacfda2cf2cd333edb84e7f5ed38

General

Target

db3800128f4313be08709acbbdc99460N.exe
Size

979KB
MD5

db3800128f4313be08709acbbdc99460
SHA1

db901b47a688a09a0045358708371eea5ea78006
SHA256

b5edf17fc0400f93627aa9f042f3abf2a52fdacfda2cf2cd333edb84e7f5ed38
SHA512

781bed6d92d97aae3ddb88d453ce1f193d7bad8fdc6941cb67c8d1e63fca38133a4920825c95ffaf73f252a33a66b45422ff40156ce22fd941e5dd1360c8d548
SSDEEP

24576:v6Zv2ivhBVnFys7xP86LXtqZEGuhQTvsJPIl4z4HV:vE2ivhQs7dLXOEvhQTiglj

Score

8^/10

discovery persistence upx

Malware Config

Signatures

Boot or Logon Autostart Execution: Active Setup 2 TTPs 2 IoCs

Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

persistence

Active Setup

T1547.014

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{74BC7E29-8B9A-11D5-EBA1-F78EEEEEE983}	db3800128f4313be08709acbbdc99460N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{74BC7E29-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "msovw32.exe"	db3800128f4313be08709acbbdc99460N.exe

Modifies system executable filetype association 2 TTPs 1 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1546.001

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	db3800128f4313be08709acbbdc99460N.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3512-0-0x0000000000400000-0x0000000000439000-memory.dmp	upx
behavioral2/files/0x00070000000235f0-5.dat	upx
behavioral2/memory/3512-7-0x0000000000400000-0x0000000000439000-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\USER\S-1-5-21-2170637797-568393320-3232933035-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	db3800128f4313be08709acbbdc99460N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	db3800128f4313be08709acbbdc99460N.exe

Drops file in System32 directory 6 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\msovw32.exe	db3800128f4313be08709acbbdc99460N.exe
File created	C:\Windows\SysWOW64\concp32.exe	db3800128f4313be08709acbbdc99460N.exe
File opened for modification	C:\Windows\SysWOW64\concp32.exe	db3800128f4313be08709acbbdc99460N.exe
File created	C:\Windows\SysWOW64\vcl32.exe	db3800128f4313be08709acbbdc99460N.exe
File opened for modification	C:\Windows\SysWOW64\vcl32.exe	db3800128f4313be08709acbbdc99460N.exe
File created	C:\Windows\SysWOW64\msovw32.exe	db3800128f4313be08709acbbdc99460N.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2520	3512	WerFault.exe	90

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	db3800128f4313be08709acbbdc99460N.exe

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{74BC7E29-8B9A-11D5-EBA1-F78EEEEEE983}	db3800128f4313be08709acbbdc99460N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{74BC7E29-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32	db3800128f4313be08709acbbdc99460N.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{74BC7E29-8B9A-11D5-EBA1-F78EEEEEE983}\sm = ebb5525fa3bcf9422c8ff945977d6af9	db3800128f4313be08709acbbdc99460N.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{74BC7E29-8B9A-11D5-EBA1-F78EEEEEE983}\ax = f1b31b76aeaba502385c40d3d93b4da8	db3800128f4313be08709acbbdc99460N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	db3800128f4313be08709acbbdc99460N.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
3512	db3800128f4313be08709acbbdc99460N.exe

C:\Users\Admin\AppData\Local\Temp\db3800128f4313be08709acbbdc99460N.exe
"C:\Users\Admin\AppData\Local\Temp\db3800128f4313be08709acbbdc99460N.exe"
1⤵
- Boot or Logon Autostart Execution: Active Setup
- Modifies system executable filetype association
- Adds Run key to start application
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
PID:3512
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3512 -s 700
  2⤵
  - Program crash
  PID:2520

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 --field-trial-handle=4104,i,13995403245988825027,7033610968827661507,262144 --variations-seed-version --mojo-platform-channel-handle=4216 /prefetch:8
1⤵
PID:4576

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3512 -ip 3512
1⤵
PID:1600

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Active Setup

1

T1547.014

Registry Run Keys / Startup Folder

1

T1547.001

Event Triggered Execution

1

T1546

Change Default File Association

1

T1546.001

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Active Setup

1

T1547.014

Registry Run Keys / Startup Folder

1

T1547.001

Event Triggered Execution

1

T1546

Change Default File Association

1

T1546.001

Defense Evasion

Modify Registry

3

T1112

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\SysWOW64\concp32.exe

Filesize
989KB

MD5
340cfd0a3e62b1b2c64a7aadf691f497

SHA1
e1986e68a07a206586821c326aa95e379f18a0f9

SHA256
961fbf3ee5947627a192d18c40dec7514812f79662167ea547f9120cea79ee63

SHA512
82a58324003c076b45e2ca974e1a7321100d1b7ca308fd4dfa1fef631157ba79a2aa5b81451c16e6c170bc984840f600c52832eaa59b66a61875efe2f729b2c2

Download Submit
memory/3512-0-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/3512-7-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads