56b002d97cb785113a56650fb17153278e6e76da8963f8e80846a25c81903100

General

Target

56b002d97cb785113a56650fb17153278e6e76da8963f8e80846a25c81903100.exe
Size

167KB
MD5

6cbc0f821f1c91c807a8408ad2651fea
SHA1

5d5206e909483635cbf02c08c48952027b231b1c
SHA256

56b002d97cb785113a56650fb17153278e6e76da8963f8e80846a25c81903100
SHA512

aa0f003a58ec2cafba35bf2eb98019af9aaaaa12d056dde6f0e1f8c697187087d87d014116e760e84180ece093d9d2fc724e20af85724e267cd4ed39b3038510
SSDEEP

1536:i2WDcOpULCH0a+TNXyyXetH28JZveKivnmOOOU:zWDuLzZXyyXeECveDnmOOOU

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
2396	attrib.exe

Deletes itself 1 IoCs

pid	Process
2384	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2052	iuyhost.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1580-0-0x0000000000400000-0x0000000000429000-memory.dmp	upx
behavioral1/files/0x000700000001211a-4.dat	upx
behavioral1/memory/2052-5-0x0000000000400000-0x0000000000429000-memory.dmp	upx
behavioral1/memory/1580-6-0x0000000000400000-0x0000000000429000-memory.dmp	upx
behavioral1/memory/2052-7-0x0000000000400000-0x0000000000429000-memory.dmp	upx

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

Drops file in Windows directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Debug\iuyhost.exe	56b002d97cb785113a56650fb17153278e6e76da8963f8e80846a25c81903100.exe
File opened for modification	C:\Windows\Debug\iuyhost.exe	attrib.exe
File created	C:\Windows\Debug\iuyhost.exe	56b002d97cb785113a56650fb17153278e6e76da8963f8e80846a25c81903100.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	56b002d97cb785113a56650fb17153278e6e76da8963f8e80846a25c81903100.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	iuyhost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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 opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	iuyhost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	iuyhost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	1580	56b002d97cb785113a56650fb17153278e6e76da8963f8e80846a25c81903100.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1580 wrote to memory of 2396	1580	56b002d97cb785113a56650fb17153278e6e76da8963f8e80846a25c81903100.exe	30
PID 1580 wrote to memory of 2396	1580	56b002d97cb785113a56650fb17153278e6e76da8963f8e80846a25c81903100.exe	30
PID 1580 wrote to memory of 2396	1580	56b002d97cb785113a56650fb17153278e6e76da8963f8e80846a25c81903100.exe	30
PID 1580 wrote to memory of 2396	1580	56b002d97cb785113a56650fb17153278e6e76da8963f8e80846a25c81903100.exe	30
PID 1580 wrote to memory of 2384	1580	56b002d97cb785113a56650fb17153278e6e76da8963f8e80846a25c81903100.exe	33
PID 1580 wrote to memory of 2384	1580	56b002d97cb785113a56650fb17153278e6e76da8963f8e80846a25c81903100.exe	33
PID 1580 wrote to memory of 2384	1580	56b002d97cb785113a56650fb17153278e6e76da8963f8e80846a25c81903100.exe	33
PID 1580 wrote to memory of 2384	1580	56b002d97cb785113a56650fb17153278e6e76da8963f8e80846a25c81903100.exe	33

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2396	attrib.exe

C:\Users\Admin\AppData\Local\Temp\56b002d97cb785113a56650fb17153278e6e76da8963f8e80846a25c81903100.exe
"C:\Users\Admin\AppData\Local\Temp\56b002d97cb785113a56650fb17153278e6e76da8963f8e80846a25c81903100.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1580
- C:\Windows\SysWOW64\attrib.exe
  attrib +a +s +h +r C:\Windows\Debug\iuyhost.exe
  2⤵
  - Sets file to hidden
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Views/modifies file attributes
  PID:2396
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\56B002~1.EXE > nul
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2384

C:\Windows\Debug\iuyhost.exe
C:\Windows\Debug\iuyhost.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Checks processor information in registry
PID:2052

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

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:\Windows\Debug\iuyhost.exe

Filesize
167KB

MD5
8da15935d2aef3227164039f7b9bedd0

SHA1
2b7300b97e41d9365b1eb0f4913ca3b4324ba6d7

SHA256
a9ad9471e66c6d77569e072ce271974f06be615f01b0abaf4daaca1ff4581c7a

SHA512
b693de415ce93d96010c3a164272a14f6289c994bd7889960b0b7e6ea30ed0c9b733ee383ba4332e144542d9fa90edd6f687739dd756dd95c2a128bc868ed3ee

Download Submit
memory/1580-0-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/1580-6-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/2052-5-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/2052-7-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads