3278c3a3e7c27ff920c41bdf58f444192f965faccf79a1e0c2bdf0350ae2af82

General

Target

3278c3a3e7c27ff920c41bdf58f444192f965faccf79a1e0c2bdf0350ae2af82.exe
Size

135KB
MD5

f99d4b17dfc714906f6315ee566bbd89
SHA1

b12aaa8407f9b5d798657fc47d792c5409962ba6
SHA256

3278c3a3e7c27ff920c41bdf58f444192f965faccf79a1e0c2bdf0350ae2af82
SHA512

c211fff92c501370774762bdd70600f7715ae97c3b9213cb4762924ca2bc032de5d9e267b27ee5b4f0f3d4f361baebc385fc09f80d80d86c30f74fcb43e7e686
SSDEEP

1536:YGYU/W2/HG6QMauSV3ixJHABLrmhH7i9eNOOg00GqMIK7aGZh3SOI:YfU/WF6QMauSuiWNi9eNOl0007NZIOI

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-1-5-21-3419463127-3903270268-2580331543-1000\Control Panel\International\Geo\Nation	3278c3a3e7c27ff920c41bdf58f444192f965faccf79a1e0c2bdf0350ae2af82.exe

Executes dropped EXE 1 IoCs

pid	Process
3836	wuauclt.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4980-0-0x0000000000C60000-0x0000000000C88000-memory.dmp	upx
behavioral2/files/0x0008000000023410-3.dat	upx
behavioral2/memory/3836-5-0x0000000000D20000-0x0000000000D48000-memory.dmp	upx
behavioral2/memory/4980-6-0x0000000000C60000-0x0000000000C88000-memory.dmp	upx
behavioral2/memory/3836-7-0x0000000000D20000-0x0000000000D48000-memory.dmp	upx
behavioral2/memory/4980-8-0x0000000000C60000-0x0000000000C88000-memory.dmp	upx

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"	3278c3a3e7c27ff920c41bdf58f444192f965faccf79a1e0c2bdf0350ae2af82.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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3278c3a3e7c27ff920c41bdf58f444192f965faccf79a1e0c2bdf0350ae2af82.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wuauclt.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4980 wrote to memory of 3836	4980	3278c3a3e7c27ff920c41bdf58f444192f965faccf79a1e0c2bdf0350ae2af82.exe	86
PID 4980 wrote to memory of 3836	4980	3278c3a3e7c27ff920c41bdf58f444192f965faccf79a1e0c2bdf0350ae2af82.exe	86
PID 4980 wrote to memory of 3836	4980	3278c3a3e7c27ff920c41bdf58f444192f965faccf79a1e0c2bdf0350ae2af82.exe	86
PID 4980 wrote to memory of 4088	4980	3278c3a3e7c27ff920c41bdf58f444192f965faccf79a1e0c2bdf0350ae2af82.exe	97
PID 4980 wrote to memory of 4088	4980	3278c3a3e7c27ff920c41bdf58f444192f965faccf79a1e0c2bdf0350ae2af82.exe	97
PID 4980 wrote to memory of 4088	4980	3278c3a3e7c27ff920c41bdf58f444192f965faccf79a1e0c2bdf0350ae2af82.exe	97

C:\Users\Admin\AppData\Local\Temp\3278c3a3e7c27ff920c41bdf58f444192f965faccf79a1e0c2bdf0350ae2af82.exe
"C:\Users\Admin\AppData\Local\Temp\3278c3a3e7c27ff920c41bdf58f444192f965faccf79a1e0c2bdf0350ae2af82.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4980
- C:\ProgramData\Update\wuauclt.exe
  "C:\ProgramData\Update\wuauclt.exe" /run
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:3836
- C:\windows\SysWOW64\cmd.exe
  "C:\windows\system32\cmd.exe" /c del /q "C:\Users\Admin\AppData\Local\Temp\3278c3a3e7c27ff920c41bdf58f444192f965faccf79a1e0c2bdf0350ae2af82.exe" >> NUL
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4088

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
25a63d1a75ed11455d839a9c741e390c

SHA1
fddc12f21931e935d08f23373f5b46cff747e609

SHA256
2c60619e23a427a014681579edfcc8ec66197794ecf36e7318b58e75434112ab

SHA512
2d7eed80f0967cc0e2115d9e3260326dd9ef11248ec5a6e5baab42e977725970bd3109862abca0263fa9fa416cbcdbf66db1ee2154706b0a5807cdd8c2af418c

Download Submit
memory/3836-5-0x0000000000D20000-0x0000000000D48000-memory.dmp

Filesize
160KB

Download
memory/3836-7-0x0000000000D20000-0x0000000000D48000-memory.dmp

Filesize
160KB

Download
memory/4980-0-0x0000000000C60000-0x0000000000C88000-memory.dmp

Filesize
160KB

Download
memory/4980-6-0x0000000000C60000-0x0000000000C88000-memory.dmp

Filesize
160KB

Download
memory/4980-8-0x0000000000C60000-0x0000000000C88000-memory.dmp

Filesize
160KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads