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

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	61dbb15d3fa8cb62fad92dd1521c35b8a377de84bd412896c221e6483f15b8ee.exe

Executes dropped EXE 1 IoCs

pid	Process
3680	wuauclt.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
behavioral2/memory/2248-0-0x0000000000BF0000-0x0000000000C18000-memory.dmp	upx
behavioral2/files/0x0009000000023c65-3.dat	upx
behavioral2/memory/3680-4-0x0000000000C00000-0x0000000000C28000-memory.dmp	upx
behavioral2/memory/2248-6-0x0000000000BF0000-0x0000000000C18000-memory.dmp	upx
behavioral2/memory/3680-7-0x0000000000C00000-0x0000000000C28000-memory.dmp	upx
behavioral2/memory/2248-8-0x0000000000BF0000-0x0000000000C18000-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	61dbb15d3fa8cb62fad92dd1521c35b8a377de84bd412896c221e6483f15b8ee.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

description	pid	Process	procid_target
PID 2248 wrote to memory of 3680	2248	61dbb15d3fa8cb62fad92dd1521c35b8a377de84bd412896c221e6483f15b8ee.exe	83
PID 2248 wrote to memory of 3680	2248	61dbb15d3fa8cb62fad92dd1521c35b8a377de84bd412896c221e6483f15b8ee.exe	83
PID 2248 wrote to memory of 3680	2248	61dbb15d3fa8cb62fad92dd1521c35b8a377de84bd412896c221e6483f15b8ee.exe	83
PID 2248 wrote to memory of 2736	2248	61dbb15d3fa8cb62fad92dd1521c35b8a377de84bd412896c221e6483f15b8ee.exe	101
PID 2248 wrote to memory of 2736	2248	61dbb15d3fa8cb62fad92dd1521c35b8a377de84bd412896c221e6483f15b8ee.exe	101
PID 2248 wrote to memory of 2736	2248	61dbb15d3fa8cb62fad92dd1521c35b8a377de84bd412896c221e6483f15b8ee.exe	101

C:\Users\Admin\AppData\Local\Temp\61dbb15d3fa8cb62fad92dd1521c35b8a377de84bd412896c221e6483f15b8ee.exe
"C:\Users\Admin\AppData\Local\Temp\61dbb15d3fa8cb62fad92dd1521c35b8a377de84bd412896c221e6483f15b8ee.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2248
- C:\ProgramData\Update\wuauclt.exe
  "C:\ProgramData\Update\wuauclt.exe" /run
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:3680
- C:\windows\SysWOW64\cmd.exe
  "C:\windows\system32\cmd.exe" /c del /q "C:\Users\Admin\AppData\Local\Temp\61dbb15d3fa8cb62fad92dd1521c35b8a377de84bd412896c221e6483f15b8ee.exe" >> NUL
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2736

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

Query Registry

1

T1012

System Information Discovery

2

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

C:\ProgramData\Update\wuauclt.exe

Filesize
135KB

MD5
27af3b36bd02fd16b0f6dc7ec90937f9

SHA1
cf4d7f542ae0d0cd6234bd44c25e837b706aba9f

SHA256
dee83adac618932fe0d9254090d6bb754281ec48c40b886fa9f5ab58296b21d1

SHA512
de00b1209c207f174916cd09bbe0265796aa9fddbf1eb21402fa1209bae5ecc7094b4486249083a63205fc622c3365f89a9fecc2c6ceba5c875ce555833635f8

Download Submit
memory/2248-0-0x0000000000BF0000-0x0000000000C18000-memory.dmp

Filesize
160KB

Download
memory/2248-6-0x0000000000BF0000-0x0000000000C18000-memory.dmp

Filesize
160KB

Download
memory/2248-8-0x0000000000BF0000-0x0000000000C18000-memory.dmp

Filesize
160KB

Download
memory/3680-4-0x0000000000C00000-0x0000000000C28000-memory.dmp

Filesize
160KB

Download
memory/3680-7-0x0000000000C00000-0x0000000000C28000-memory.dmp

Filesize
160KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads