d77fbb698db371d7726f38483a547dba917261a7152a5157f86d9dcc82040f1c

General

Target

d77fbb698db371d7726f38483a547dba917261a7152a5157f86d9dcc82040f1cN.exe
Size

135KB
MD5

17aa78a2fcc87a9856464a4cd9386850
SHA1

ecd863197046406227799fa2142231b82d2e2a66
SHA256

d77fbb698db371d7726f38483a547dba917261a7152a5157f86d9dcc82040f1c
SHA512

fb2b92db582945a7245153cf7d775238b25364825aa1227da7a8ff462b20afd0a77b787ce60d61cba363b635cb8164489b5d8e1eb716bcc62cdf804196119ac3
SSDEEP

1536:YGYU/W2/HG6QMauSV3ixJHABLrmhH7i9eNOOg00GqMIK7aGZh3SO4:YfU/WF6QMauSuiWNi9eNOl0007NZIO4

Score

7^/10

defense_evasion discovery persistence upx

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
1220	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
1080	wuauclt.exe

Loads dropped DLL 1 IoCs

pid	Process
1892	d77fbb698db371d7726f38483a547dba917261a7152a5157f86d9dcc82040f1cN.exe

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\\wuauclt.exe\" /run"	d77fbb698db371d7726f38483a547dba917261a7152a5157f86d9dcc82040f1cN.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

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1892-0-0x0000000001120000-0x0000000001148000-memory.dmp	upx
behavioral1/files/0x0008000000015cb6-2.dat	upx
behavioral1/memory/1892-3-0x0000000000100000-0x0000000000128000-memory.dmp	upx
behavioral1/memory/1892-7-0x0000000001120000-0x0000000001148000-memory.dmp	upx
behavioral1/memory/1080-8-0x0000000000A90000-0x0000000000AB8000-memory.dmp	upx
behavioral1/memory/1892-9-0x0000000001120000-0x0000000001148000-memory.dmp	upx

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d77fbb698db371d7726f38483a547dba917261a7152a5157f86d9dcc82040f1cN.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

description	pid	Process	procid_target
PID 1892 wrote to memory of 1080	1892	d77fbb698db371d7726f38483a547dba917261a7152a5157f86d9dcc82040f1cN.exe	30
PID 1892 wrote to memory of 1080	1892	d77fbb698db371d7726f38483a547dba917261a7152a5157f86d9dcc82040f1cN.exe	30
PID 1892 wrote to memory of 1080	1892	d77fbb698db371d7726f38483a547dba917261a7152a5157f86d9dcc82040f1cN.exe	30
PID 1892 wrote to memory of 1080	1892	d77fbb698db371d7726f38483a547dba917261a7152a5157f86d9dcc82040f1cN.exe	30
PID 1892 wrote to memory of 1220	1892	d77fbb698db371d7726f38483a547dba917261a7152a5157f86d9dcc82040f1cN.exe	32
PID 1892 wrote to memory of 1220	1892	d77fbb698db371d7726f38483a547dba917261a7152a5157f86d9dcc82040f1cN.exe	32
PID 1892 wrote to memory of 1220	1892	d77fbb698db371d7726f38483a547dba917261a7152a5157f86d9dcc82040f1cN.exe	32
PID 1892 wrote to memory of 1220	1892	d77fbb698db371d7726f38483a547dba917261a7152a5157f86d9dcc82040f1cN.exe	32

C:\Users\Admin\AppData\Local\Temp\d77fbb698db371d7726f38483a547dba917261a7152a5157f86d9dcc82040f1cN.exe
"C:\Users\Admin\AppData\Local\Temp\d77fbb698db371d7726f38483a547dba917261a7152a5157f86d9dcc82040f1cN.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1892
- C:\ProgramData\Update\wuauclt.exe
  "C:\ProgramData\Update\wuauclt.exe" /run
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:1080
- C:\windows\SysWOW64\cmd.exe
  "C:\windows\system32\cmd.exe" /c del /q "C:\Users\Admin\AppData\Local\Temp\d77fbb698db371d7726f38483a547dba917261a7152a5157f86d9dcc82040f1cN.exe" >> NUL
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1220

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
a344c8cb57c0c8cb33da3a4e8138e273

SHA1
8da653aa4921e58ca910a0d3f2e1041ad2b82d86

SHA256
1e2ecccff4fada463fa81523d802165557bbdb121e81b2b78b24464cbd840219

SHA512
4d3f8e65d19e7325cee6d943d65fa4dfeeaac32f1486848aa91bd3f58f309c2637ea5e99df0da2f8954766cf6061c59b7724ad1a9e367181746cfe3ed031ed92

Download Submit
memory/1080-8-0x0000000000A90000-0x0000000000AB8000-memory.dmp

Filesize
160KB

Download
memory/1892-0-0x0000000001120000-0x0000000001148000-memory.dmp

Filesize
160KB

Download
memory/1892-3-0x0000000000100000-0x0000000000128000-memory.dmp

Filesize
160KB

Download
memory/1892-7-0x0000000001120000-0x0000000001148000-memory.dmp

Filesize
160KB

Download
memory/1892-9-0x0000000001120000-0x0000000001148000-memory.dmp

Filesize
160KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads