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

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

2008 cmd.exe
Executes dropped EXE 1 IoCs

Processes:

wuauclt.exe

pid process

2792 wuauclt.exe
Loads dropped DLL 1 IoCs

Processes:

98bfdcdeac069f922226ba62fd105920N.exe

pid process

2812 98bfdcdeac069f922226ba62fd105920N.exe

pid	process
2008	cmd.exe

pid	process
2792	wuauclt.exe

pid	process
2812	98bfdcdeac069f922226ba62fd105920N.exe

UPX packed file 6 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2812-0-0x0000000000BF0000-0x0000000000C18000-memory.dmp	upx
\ProgramData\Update\wuauclt.exe	upx
behavioral1/memory/2792-7-0x00000000003A0000-0x00000000003C8000-memory.dmp	upx
behavioral1/memory/2812-8-0x0000000000BF0000-0x0000000000C18000-memory.dmp	upx
behavioral1/memory/2792-10-0x00000000003A0000-0x00000000003C8000-memory.dmp	upx
behavioral1/memory/2812-11-0x0000000000BF0000-0x0000000000C18000-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 8 IoCs

Processes:

98bfdcdeac069f922226ba62fd105920N.exe

description	pid	process	target process
PID 2812 wrote to memory of 2792	2812	98bfdcdeac069f922226ba62fd105920N.exe	wuauclt.exe
PID 2812 wrote to memory of 2792	2812	98bfdcdeac069f922226ba62fd105920N.exe	wuauclt.exe
PID 2812 wrote to memory of 2792	2812	98bfdcdeac069f922226ba62fd105920N.exe	wuauclt.exe
PID 2812 wrote to memory of 2792	2812	98bfdcdeac069f922226ba62fd105920N.exe	wuauclt.exe
PID 2812 wrote to memory of 2008	2812	98bfdcdeac069f922226ba62fd105920N.exe	cmd.exe
PID 2812 wrote to memory of 2008	2812	98bfdcdeac069f922226ba62fd105920N.exe	cmd.exe
PID 2812 wrote to memory of 2008	2812	98bfdcdeac069f922226ba62fd105920N.exe	cmd.exe
PID 2812 wrote to memory of 2008	2812	98bfdcdeac069f922226ba62fd105920N.exe	cmd.exe

C:\Users\Admin\AppData\Local\Temp\98bfdcdeac069f922226ba62fd105920N.exe
"C:\Users\Admin\AppData\Local\Temp\98bfdcdeac069f922226ba62fd105920N.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2812

C:\ProgramData\Update\wuauclt.exe
"C:\ProgramData\Update\wuauclt.exe" /run
2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:2792

C:\windows\SysWOW64\cmd.exe
"C:\windows\system32\cmd.exe" /c del /q "C:\Users\Admin\AppData\Local\Temp\98bfdcdeac069f922226ba62fd105920N.exe" >> NUL
2⤵
- Deletes itself
- System Location Discovery: System Language Discovery
PID:2008

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

Indicator Removal

1

T1070

File Deletion

Modify Registry

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\ProgramData\Update\wuauclt.exe

Filesize
135KB

MD5
e9052efe555d0ff2d414b2b097d49198

SHA1
7d468d24b2fbd4173abf316f281097b229f5262d

SHA256
a723b87ea4f47f38a741211a6f36e198a2459033af99eeba4a7587a0fc21e76c

SHA512
3c89401c10587de45716cd892bc1db0514dd951a9cea2d629aaf2ad74649fdcfd6be5d4759648674ad98b6228accb590135bbb9344302a8e45980a8b4fe273e2

Download Submit
memory/2792-7-0x00000000003A0000-0x00000000003C8000-memory.dmp

Filesize
160KB

Download
memory/2792-10-0x00000000003A0000-0x00000000003C8000-memory.dmp

Filesize
160KB

Download
memory/2812-0-0x0000000000BF0000-0x0000000000C18000-memory.dmp

Filesize
160KB

Download
memory/2812-4-0x00000000000F0000-0x0000000000118000-memory.dmp

Filesize
160KB

Download
memory/2812-8-0x0000000000BF0000-0x0000000000C18000-memory.dmp

Filesize
160KB

Download
memory/2812-9-0x00000000000F0000-0x0000000000118000-memory.dmp

Filesize
160KB

Download
memory/2812-11-0x0000000000BF0000-0x0000000000C18000-memory.dmp

Filesize
160KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads