c505d2df3b137d7961f5e9afed4ff0855f091f372cf235b0e6ce43eb1353c6ab

General

Target

c505d2df3b137d7961f5e9afed4ff0855f091f372cf235b0e6ce43eb1353c6ab.exe
Size

786KB
MD5

0ee111c154f7e2682f1a2409d3225fab
SHA1

781ea94cb93bb24acbb6e605ec97c4e630a07974
SHA256

c505d2df3b137d7961f5e9afed4ff0855f091f372cf235b0e6ce43eb1353c6ab
SHA512

95769305fe66a28f20a189fe9ed1ecf51cae38c358fbf5238bae8349ff112fc1ef76b578815bbf6118f7725112f1dfaa785058fb60e40fed57b7da68af00f7b5
SSDEEP

24576:v6Zv2ivhBVnFvh5Q44+iiEb0f2QwzeQW3mu:vE2ivhhUK9fmpCB

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\{A413D944-8B9A-11D5-EBA1-F78EEEEEE983}	c505d2df3b137d7961f5e9afed4ff0855f091f372cf235b0e6ce43eb1353c6ab.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{A413D944-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "mskam32.exe"	c505d2df3b137d7961f5e9afed4ff0855f091f372cf235b0e6ce43eb1353c6ab.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\" %*"	c505d2df3b137d7961f5e9afed4ff0855f091f372cf235b0e6ce43eb1353c6ab.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4192-0-0x0000000000400000-0x0000000000439000-memory.dmp	upx
behavioral2/files/0x00070000000235af-5.dat	upx
behavioral2/memory/4192-7-0x0000000000400000-0x0000000000439000-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\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	c505d2df3b137d7961f5e9afed4ff0855f091f372cf235b0e6ce43eb1353c6ab.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	c505d2df3b137d7961f5e9afed4ff0855f091f372cf235b0e6ce43eb1353c6ab.exe

Drops file in System32 directory 6 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\vcl32.exe	c505d2df3b137d7961f5e9afed4ff0855f091f372cf235b0e6ce43eb1353c6ab.exe
File opened for modification	C:\Windows\SysWOW64\vcl32.exe	c505d2df3b137d7961f5e9afed4ff0855f091f372cf235b0e6ce43eb1353c6ab.exe
File created	C:\Windows\SysWOW64\mskam32.exe	c505d2df3b137d7961f5e9afed4ff0855f091f372cf235b0e6ce43eb1353c6ab.exe
File opened for modification	C:\Windows\SysWOW64\mskam32.exe	c505d2df3b137d7961f5e9afed4ff0855f091f372cf235b0e6ce43eb1353c6ab.exe
File created	C:\Windows\SysWOW64\concp32.exe	c505d2df3b137d7961f5e9afed4ff0855f091f372cf235b0e6ce43eb1353c6ab.exe
File opened for modification	C:\Windows\SysWOW64\concp32.exe	c505d2df3b137d7961f5e9afed4ff0855f091f372cf235b0e6ce43eb1353c6ab.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1280	4192	WerFault.exe	89

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	c505d2df3b137d7961f5e9afed4ff0855f091f372cf235b0e6ce43eb1353c6ab.exe

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A413D944-8B9A-11D5-EBA1-F78EEEEEE983}	c505d2df3b137d7961f5e9afed4ff0855f091f372cf235b0e6ce43eb1353c6ab.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A413D944-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32	c505d2df3b137d7961f5e9afed4ff0855f091f372cf235b0e6ce43eb1353c6ab.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A413D944-8B9A-11D5-EBA1-F78EEEEEE983}\sm = ebb5525fa3bcf9422c8ff945977d6af9	c505d2df3b137d7961f5e9afed4ff0855f091f372cf235b0e6ce43eb1353c6ab.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A413D944-8B9A-11D5-EBA1-F78EEEEEE983}\ax = fd8c86687d3236a28ef9a265bc399e13	c505d2df3b137d7961f5e9afed4ff0855f091f372cf235b0e6ce43eb1353c6ab.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	c505d2df3b137d7961f5e9afed4ff0855f091f372cf235b0e6ce43eb1353c6ab.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
4192	c505d2df3b137d7961f5e9afed4ff0855f091f372cf235b0e6ce43eb1353c6ab.exe

C:\Users\Admin\AppData\Local\Temp\c505d2df3b137d7961f5e9afed4ff0855f091f372cf235b0e6ce43eb1353c6ab.exe
"C:\Users\Admin\AppData\Local\Temp\c505d2df3b137d7961f5e9afed4ff0855f091f372cf235b0e6ce43eb1353c6ab.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:4192
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4192 -s 712
  2⤵
  - Program crash
  PID:1280

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=4404,i,1330210614411927383,9239043499051775691,262144 --variations-seed-version --mojo-platform-channel-handle=1320 /prefetch:8
1⤵
PID:768

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4192 -ip 4192
1⤵
PID:4028

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
787KB

MD5
20cf3910686dd7dd932d2055f9516850

SHA1
adfbbe9260dffbf1a246ec203e635652b8cf7161

SHA256
dc37a9ab6b347d7801ae4e0b62c28b8d4a515ccf4fcb3a812da2657db4106741

SHA512
9babf11c18d35ce4ebb925287cd74559aa4bce9a76f6a2c2cae5f6a5788ee77ab631509c575029c0d9791163c1a568bb2c5c2948974c60906782bf3a6f6ac4d2

Download Submit
memory/4192-0-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/4192-7-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads