61dbb15d3fa8cb62fad92dd1521c35b8a377de84bd412896c221e6483f15b8ee

General

Target

61dbb15d3fa8cb62fad92dd1521c35b8a377de84bd412896c221e6483f15b8ee.exe
Size

135KB
MD5

4ee0ebaa21a7673774ebfbc24556f3a6
SHA1

df571591728814abd504099c16aac95c68e5d49f
SHA256

61dbb15d3fa8cb62fad92dd1521c35b8a377de84bd412896c221e6483f15b8ee
SHA512

e81d962d940edadd6e3f910aa858c912bdd10ed5558125873cf367a569936d9977765f3ddbe0777d228b7ff47907a22c828a51e5479612d978aa627ccb998137
SSDEEP

1536:YGYU/W2/HG6QMauSV3ixJHABLrmhH7i9eNOOg00GqMIK7aGZh3SOq:YfU/WF6QMauSuiWNi9eNOl0007NZIOq

Score

7^/10

defense_evasion discovery persistence upx

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2756	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
1936	wuauclt.exe

Loads dropped DLL 1 IoCs

pid	Process
1288	61dbb15d3fa8cb62fad92dd1521c35b8a377de84bd412896c221e6483f15b8ee.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"	61dbb15d3fa8cb62fad92dd1521c35b8a377de84bd412896c221e6483f15b8ee.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/1288-0-0x0000000000DF0000-0x0000000000E18000-memory.dmp	upx
behavioral1/files/0x0008000000019023-2.dat	upx
behavioral1/memory/1936-7-0x0000000001320000-0x0000000001348000-memory.dmp	upx
behavioral1/memory/1288-8-0x0000000000DF0000-0x0000000000E18000-memory.dmp	upx
behavioral1/memory/1936-10-0x0000000001320000-0x0000000001348000-memory.dmp	upx
behavioral1/memory/1288-11-0x0000000000DF0000-0x0000000000E18000-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	wuauclt.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	61dbb15d3fa8cb62fad92dd1521c35b8a377de84bd412896c221e6483f15b8ee.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1288 wrote to memory of 1936	1288	61dbb15d3fa8cb62fad92dd1521c35b8a377de84bd412896c221e6483f15b8ee.exe	30
PID 1288 wrote to memory of 1936	1288	61dbb15d3fa8cb62fad92dd1521c35b8a377de84bd412896c221e6483f15b8ee.exe	30
PID 1288 wrote to memory of 1936	1288	61dbb15d3fa8cb62fad92dd1521c35b8a377de84bd412896c221e6483f15b8ee.exe	30
PID 1288 wrote to memory of 1936	1288	61dbb15d3fa8cb62fad92dd1521c35b8a377de84bd412896c221e6483f15b8ee.exe	30
PID 1288 wrote to memory of 2756	1288	61dbb15d3fa8cb62fad92dd1521c35b8a377de84bd412896c221e6483f15b8ee.exe	32
PID 1288 wrote to memory of 2756	1288	61dbb15d3fa8cb62fad92dd1521c35b8a377de84bd412896c221e6483f15b8ee.exe	32
PID 1288 wrote to memory of 2756	1288	61dbb15d3fa8cb62fad92dd1521c35b8a377de84bd412896c221e6483f15b8ee.exe	32
PID 1288 wrote to memory of 2756	1288	61dbb15d3fa8cb62fad92dd1521c35b8a377de84bd412896c221e6483f15b8ee.exe	32

C:\Users\Admin\AppData\Local\Temp\61dbb15d3fa8cb62fad92dd1521c35b8a377de84bd412896c221e6483f15b8ee.exe
"C:\Users\Admin\AppData\Local\Temp\61dbb15d3fa8cb62fad92dd1521c35b8a377de84bd412896c221e6483f15b8ee.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1288
- C:\ProgramData\Update\wuauclt.exe
  "C:\ProgramData\Update\wuauclt.exe" /run
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:1936
- C:\windows\SysWOW64\cmd.exe
  "C:\windows\system32\cmd.exe" /c del /q "C:\Users\Admin\AppData\Local\Temp\61dbb15d3fa8cb62fad92dd1521c35b8a377de84bd412896c221e6483f15b8ee.exe" >> NUL
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2756

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
d0e809866585e1c12f5ccaba82b1cf6a

SHA1
0da2aef17e4a7ad146fb6cd99958cae0d93ee5aa

SHA256
cdebdefc911313acd073349fc1a082c8387df9401f25624e62c4c7ce7af894b5

SHA512
1cd7dab9e6bf9de61ca82f017a1e81e10c547eb10523812cbec1483f3269d7e61045923cf04192b5a6b89efc3913a5c35a26f16530a1210a769609b6c8f6ef42

Download Submit
memory/1288-0-0x0000000000DF0000-0x0000000000E18000-memory.dmp

Filesize
160KB

Download
memory/1288-6-0x00000000000F0000-0x0000000000118000-memory.dmp

Filesize
160KB

Download
memory/1288-8-0x0000000000DF0000-0x0000000000E18000-memory.dmp

Filesize
160KB

Download
memory/1288-9-0x00000000000F0000-0x0000000000118000-memory.dmp

Filesize
160KB

Download
memory/1288-11-0x0000000000DF0000-0x0000000000E18000-memory.dmp

Filesize
160KB

Download
memory/1936-7-0x0000000001320000-0x0000000001348000-memory.dmp

Filesize
160KB

Download
memory/1936-10-0x0000000001320000-0x0000000001348000-memory.dmp

Filesize
160KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads