97c78b9c98a3f73a34c90888fbff2bed224aacea28693a46d44f315a4dbe466f

General

Target

97c78b9c98a3f73a34c90888fbff2bed224aacea28693a46d44f315a4dbe466f.exe
Size

47KB
MD5

e118afe97f3a6731d8205ab86971ac52
SHA1

d7fd7635009396014c500965bb24cba5f1c09d51
SHA256

97c78b9c98a3f73a34c90888fbff2bed224aacea28693a46d44f315a4dbe466f
SHA512

259c3014ea27d51d46015c906841cd7f6fef0dae3e6c2102460784f69faef1b82041780384daa1e43800ec0a0df8895b1666a045f3f1cd61ed08010b0bc332d3
SSDEEP

768:hX0gWvCzuw6Uj9uGi45XOPxV5HNWnnnl000e999vddddIyyyOOtttb22220:6vCzuw6UD9Az5HNWnnn6222220

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

Processes:

attrib.exe

pid process

3368 attrib.exe

pid	process
3368	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

Processes:

97c78b9c98a3f73a34c90888fbff2bed224aacea28693a46d44f315a4dbe466f.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	97c78b9c98a3f73a34c90888fbff2bed224aacea28693a46d44f315a4dbe466f.exe

Executes dropped EXE 1 IoCs

Processes:

riyhost.exe

pid process

216 riyhost.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

pid	process
216	riyhost.exe

UPX packed file 6 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/2652-0-0x0000000000400000-0x0000000000416000-memory.dmp	upx
C:\Windows\debug\riyhost.exe	upx
behavioral2/memory/2652-6-0x0000000000400000-0x0000000000416000-memory.dmp	upx
behavioral2/memory/216-8-0x0000000000400000-0x0000000000416000-memory.dmp	upx
behavioral2/memory/216-14-0x0000000000400000-0x0000000000416000-memory.dmp	upx
behavioral2/memory/216-17-0x0000000000400000-0x0000000000416000-memory.dmp	upx

Drops file in Windows directory 3 IoCs

Processes:

97c78b9c98a3f73a34c90888fbff2bed224aacea28693a46d44f315a4dbe466f.exeattrib.exe

description	ioc	process
File created	C:\Windows\Debug\riyhost.exe	97c78b9c98a3f73a34c90888fbff2bed224aacea28693a46d44f315a4dbe466f.exe
File opened for modification	C:\Windows\Debug\riyhost.exe	97c78b9c98a3f73a34c90888fbff2bed224aacea28693a46d44f315a4dbe466f.exe
File opened for modification	C:\Windows\Debug\riyhost.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

Processes:

97c78b9c98a3f73a34c90888fbff2bed224aacea28693a46d44f315a4dbe466f.exeriyhost.exeattrib.execmd.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	97c78b9c98a3f73a34c90888fbff2bed224aacea28693a46d44f315a4dbe466f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	riyhost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.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

Processes:

riyhost.exe

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

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

97c78b9c98a3f73a34c90888fbff2bed224aacea28693a46d44f315a4dbe466f.exe

description pid process

Token: SeIncBasePriorityPrivilege 2652 97c78b9c98a3f73a34c90888fbff2bed224aacea28693a46d44f315a4dbe466f.exe

description	pid	process
Token: SeIncBasePriorityPrivilege	2652	97c78b9c98a3f73a34c90888fbff2bed224aacea28693a46d44f315a4dbe466f.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

97c78b9c98a3f73a34c90888fbff2bed224aacea28693a46d44f315a4dbe466f.exe

description	pid	process	target process
PID 2652 wrote to memory of 3368	2652	97c78b9c98a3f73a34c90888fbff2bed224aacea28693a46d44f315a4dbe466f.exe	attrib.exe
PID 2652 wrote to memory of 3368	2652	97c78b9c98a3f73a34c90888fbff2bed224aacea28693a46d44f315a4dbe466f.exe	attrib.exe
PID 2652 wrote to memory of 3368	2652	97c78b9c98a3f73a34c90888fbff2bed224aacea28693a46d44f315a4dbe466f.exe	attrib.exe
PID 2652 wrote to memory of 3752	2652	97c78b9c98a3f73a34c90888fbff2bed224aacea28693a46d44f315a4dbe466f.exe	cmd.exe
PID 2652 wrote to memory of 3752	2652	97c78b9c98a3f73a34c90888fbff2bed224aacea28693a46d44f315a4dbe466f.exe	cmd.exe
PID 2652 wrote to memory of 3752	2652	97c78b9c98a3f73a34c90888fbff2bed224aacea28693a46d44f315a4dbe466f.exe	cmd.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1564.001

Processes:

attrib.exe

pid process

3368 attrib.exe

pid	process
3368	attrib.exe

C:\Users\Admin\AppData\Local\Temp\97c78b9c98a3f73a34c90888fbff2bed224aacea28693a46d44f315a4dbe466f.exe
"C:\Users\Admin\AppData\Local\Temp\97c78b9c98a3f73a34c90888fbff2bed224aacea28693a46d44f315a4dbe466f.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:2652
- C:\Windows\SysWOW64\attrib.exe
  attrib +a +s +h +r C:\Windows\Debug\riyhost.exe
  2⤵
  - Sets file to hidden
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Views/modifies file attributes
  PID:3368
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\97C78B~1.EXE > nul
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3752

C:\Windows\Debug\riyhost.exe
C:\Windows\Debug\riyhost.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Checks processor information in registry
PID:216

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

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Downloads

C:\Windows\debug\riyhost.exe

Filesize
47KB

MD5
10c76dc4f11af40282fb8767822c2719

SHA1
6074c77422b9f97833722f121d3740f54ed4574b

SHA256
6c76b5c5f272eed9c6001b74353bd103ca73ed0506a868160f8ddde3ae6e42a0

SHA512
1af845894c8731cf3e957703cb57206219b72ae6afbe6fa3f1ea6650c8ace814141f898efcdd69ec65469aa97c35c5e8f4d8c34da0eaf39801087764605b5b81

Download Submit
memory/216-8-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/216-14-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/216-17-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/2652-0-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/2652-6-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads