b7e583bda8b271822278250e8a553a9babe664d76c6ba80e1c09ad6b501f6147

General

Target
b7e583bda8b271822278250e8a553a9babe664d76c6ba80e1c09ad6b501f6147N.exe
Size 169KB
Sample241110-j68mdsshqp
SHA256 b7e583bda8b271822278250e8a553a9babe664d76c6ba80e1c09ad6b501f6147
MD5 782f0bc582de9b6d3677dbf609fff8c0
SHA1 77be6183503f8a1d9e35bcec87b3ba5195f11d7f
SHA512 3901a16c7962b5a6650e5210d23cec58b58b8ad932decda156abc2733863250f0f5fe7dc80d9e8e62706d6e9539aac1ac0f290eddde55c8e75b36aea8b37cfc4
SSDEEP 1536:i2WDcOpULCH0a+TNXyyXetH28JZveKivnmOOOUIIII1:zWDuLzZXyyXeECveDnmOOOUIIII1
MD5 SHA1 SHA512 SSDEEP

Score

8^/10

defense_evasion discovery evasion upx

Malware Config

Signatures

Sets file to hidden 1 TTPs 1 IoCs

Modifies file attributes to stop it showing in Explorer etc.

evasion

Hidden Files and Directories

T1564.001

pid	Process
3032	attrib.exe

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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	b7e583bda8b271822278250e8a553a9babe664d76c6ba80e1c09ad6b501f6147N.exe

Executes dropped EXE 1 IoCs

pid	Process
2348	tuehost.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 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4408-0-0x0000000000400000-0x0000000000429000-memory.dmp	upx
behavioral2/files/0x000c000000023ba7-3.dat	upx
behavioral2/memory/4408-5-0x0000000000400000-0x0000000000429000-memory.dmp	upx
behavioral2/memory/2348-6-0x0000000000400000-0x0000000000429000-memory.dmp	upx

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\Debug\tuehost.exe	b7e583bda8b271822278250e8a553a9babe664d76c6ba80e1c09ad6b501f6147N.exe
File opened for modification	C:\Windows\Debug\tuehost.exe	b7e583bda8b271822278250e8a553a9babe664d76c6ba80e1c09ad6b501f6147N.exe
File opened for modification	C:\Windows\Debug\tuehost.exe	attrib.exe

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 4 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	b7e583bda8b271822278250e8a553a9babe664d76c6ba80e1c09ad6b501f6147N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tuehost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	tuehost.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	tuehost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	4408	b7e583bda8b271822278250e8a553a9babe664d76c6ba80e1c09ad6b501f6147N.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4408 wrote to memory of 3032	4408	b7e583bda8b271822278250e8a553a9babe664d76c6ba80e1c09ad6b501f6147N.exe	83
PID 4408 wrote to memory of 3032	4408	b7e583bda8b271822278250e8a553a9babe664d76c6ba80e1c09ad6b501f6147N.exe	83
PID 4408 wrote to memory of 3032	4408	b7e583bda8b271822278250e8a553a9babe664d76c6ba80e1c09ad6b501f6147N.exe	83
PID 4408 wrote to memory of 372	4408	b7e583bda8b271822278250e8a553a9babe664d76c6ba80e1c09ad6b501f6147N.exe	89
PID 4408 wrote to memory of 372	4408	b7e583bda8b271822278250e8a553a9babe664d76c6ba80e1c09ad6b501f6147N.exe	89
PID 4408 wrote to memory of 372	4408	b7e583bda8b271822278250e8a553a9babe664d76c6ba80e1c09ad6b501f6147N.exe	89

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
3032	attrib.exe

C:\Users\Admin\AppData\Local\Temp\b7e583bda8b271822278250e8a553a9babe664d76c6ba80e1c09ad6b501f6147N.exe
"C:\Users\Admin\AppData\Local\Temp\b7e583bda8b271822278250e8a553a9babe664d76c6ba80e1c09ad6b501f6147N.exe"
1⤵
- Checks computer location settings
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4408
- C:\Windows\SysWOW64\attrib.exe
  attrib +a +s +h +r C:\Windows\Debug\tuehost.exe
  2⤵
  - Sets file to hidden
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Views/modifies file attributes
  PID:3032
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\B7E583~1.EXE > nul
  2⤵
  - System Location Discovery: System Language Discovery
  PID:372

C:\Windows\Debug\tuehost.exe
C:\Windows\Debug\tuehost.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Checks processor information in registry
PID:2348

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Hide Artifacts

2

T1564

Hidden Files and Directories

2

T1564.001

Indicator Removal

1

T1070

File Deletion

1

T1070.004

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

3

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

tuehost.exe

Path C:\Windows\debug\tuehost.exe
Size 169KB
SHA256 63b575654461f77be979a48032931cbeff277f92615713675116094b4bac6dd7
MD5 907eb4f3e1d40351ba762f77d52bf05a
SHA1 eb4853e4f132a1be470182a2c9314404ab4e75af
SHA512 e1fba12508111b7b3074a7c362144a02eb09c888ec2bd2fbe53631dfa82fd616518b05341c8bdef29675dce71f6a6684529c47b3d44ff39a2910aa686438628a
SSDEEP 1536:i2WDcOpULCH0a+TNXyyXetH28JZveKivnmOOOUIIII7:zWDuLzZXyyXeECveDnmOOOUIIII7
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/2348-6-0x0000000000400000-0x0000000000429000-memory.dmp

Download

memory/4408-0-0x0000000000400000-0x0000000000429000-memory.dmp

Download

memory/4408-5-0x0000000000400000-0x0000000000429000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads