d5b893634668ba25aec12ab1d46453d4bbb3ccb38eb54062d34600e8535c4c66

General

Target

98bfdcdeac069f922226ba62fd105920N.exe
Size

135KB
MD5

98bfdcdeac069f922226ba62fd105920
SHA1

ae9020f09a75123797cf8d865b85d257ae0456e3
SHA256

d5b893634668ba25aec12ab1d46453d4bbb3ccb38eb54062d34600e8535c4c66
SHA512

d060098cbfbf8aa699a87cf542ea7377a36038494af7c775727a375cac24d205fd1224715803a99c9c35cdfede7197f5468f9efe7615b0929a9631c1bbc3899a
SSDEEP

1536:YGYU/W2/HG6QMauSV3ixJHABLrmhH7i9eNOOg00GqMIK7aGZh3SOH:YfU/WF6QMauSuiWNi9eNOl0007NZIOH

Score

7^/10

defense_evasion discovery persistence upx

Malware Config

Signatures

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

98bfdcdeac069f922226ba62fd105920N.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2990742725-2267136959-192470804-1000\Control Panel\International\Geo\Nation	98bfdcdeac069f922226ba62fd105920N.exe

Executes dropped EXE 1 IoCs

Processes:

wuauclt.exe

pid process

1232 wuauclt.exe

pid	process
1232	wuauclt.exe

UPX packed file 6 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/5104-0-0x00000000007D0000-0x00000000007F8000-memory.dmp	upx
C:\ProgramData\Update\wuauclt.exe	upx
behavioral2/memory/1232-5-0x0000000000FF0000-0x0000000001018000-memory.dmp	upx
behavioral2/memory/5104-6-0x00000000007D0000-0x00000000007F8000-memory.dmp	upx
behavioral2/memory/1232-7-0x0000000000FF0000-0x0000000001018000-memory.dmp	upx
behavioral2/memory/5104-8-0x00000000007D0000-0x00000000007F8000-memory.dmp	upx

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

98bfdcdeac069f922226ba62fd105920N.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Window Update = "\"C:\\ProgramData\\Update\\wuauclt.exe\" /run"	98bfdcdeac069f922226ba62fd105920N.exe

Indicator Removal: File Deletion 1 TTPs
Adversaries may delete files left behind by the actions of their intrusion activity.
defense_evasion

File Deletion
T1070.004
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 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

Processes:

98bfdcdeac069f922226ba62fd105920N.exewuauclt.execmd.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	98bfdcdeac069f922226ba62fd105920N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wuauclt.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

98bfdcdeac069f922226ba62fd105920N.exe

description	pid	process	target process
PID 5104 wrote to memory of 1232	5104	98bfdcdeac069f922226ba62fd105920N.exe	wuauclt.exe
PID 5104 wrote to memory of 1232	5104	98bfdcdeac069f922226ba62fd105920N.exe	wuauclt.exe
PID 5104 wrote to memory of 1232	5104	98bfdcdeac069f922226ba62fd105920N.exe	wuauclt.exe
PID 5104 wrote to memory of 4468	5104	98bfdcdeac069f922226ba62fd105920N.exe	cmd.exe
PID 5104 wrote to memory of 4468	5104	98bfdcdeac069f922226ba62fd105920N.exe	cmd.exe
PID 5104 wrote to memory of 4468	5104	98bfdcdeac069f922226ba62fd105920N.exe	cmd.exe

C:\Users\Admin\AppData\Local\Temp\98bfdcdeac069f922226ba62fd105920N.exe
"C:\Users\Admin\AppData\Local\Temp\98bfdcdeac069f922226ba62fd105920N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5104

C:\ProgramData\Update\wuauclt.exe
"C:\ProgramData\Update\wuauclt.exe" /run
2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:1232

C:\windows\SysWOW64\cmd.exe
"C:\windows\system32\cmd.exe" /c del /q "C:\Users\Admin\AppData\Local\Temp\98bfdcdeac069f922226ba62fd105920N.exe" >> NUL
2⤵
- System Location Discovery: System Language Discovery
PID:4468

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Indicator Removal

1

T1070

File Deletion

1

T1070.004

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\ProgramData\Update\wuauclt.exe
Filesize
135KB

MD5
081583a95cff7bb1d78acb9933f1db53

SHA1
65e6c974de316a57af42a61557816d0d6f5b698d

SHA256
cd173746f0aca8b313063f671ee8522a0717bca9205ef36e483f9eca9e0cafeb

SHA512
56172b062b7a530089e29186b2e03ff081078469c7603c38cb37a2f264f19d5d67408a65d40e163153433c3d5d434776f50d15feea7a4f9382cad5328ef32fa9

Download Submit
memory/1232-5-0x0000000000FF0000-0x0000000001018000-memory.dmp

Filesize
160KB

Download
memory/1232-7-0x0000000000FF0000-0x0000000001018000-memory.dmp

Filesize
160KB

Download
memory/5104-0-0x00000000007D0000-0x00000000007F8000-memory.dmp

Filesize
160KB

Download
memory/5104-6-0x00000000007D0000-0x00000000007F8000-memory.dmp

Filesize
160KB

Download
memory/5104-8-0x00000000007D0000-0x00000000007F8000-memory.dmp

Filesize
160KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads