52c6f26d5b3c4221b662d94ccabf1074de5673f4d114ea195b7bd1b697b8c806

Analysis

max time kernel
142s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20231023-en
resource tags

arch:x64arch:x86image:win10v2004-20231023-enlocale:en-usos:windows10-2004-x64system
submitted
31/10/2023, 22:08

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General

Target

NEAS.5a6f2bef8250643387465d7b88a73d00_JC.exe
Size

58KB
MD5

5a6f2bef8250643387465d7b88a73d00
SHA1

36c16e4a6e1234c65a675a2c20a1542e1e759658
SHA256

52c6f26d5b3c4221b662d94ccabf1074de5673f4d114ea195b7bd1b697b8c806
SHA512

74d9bb86f5f46ece7ae9197fefd4ab2858e3b685d00984df8e4c4dcdb30c2c7211476a23ffdb9f7f07dc4eb00fad67043529a5ea7e5fc142da666bd5baaef9a2
SSDEEP

384:+5rDuuOFpEauMLfQDb2pproT/z4m5m1GJE6Al6z8yXDTLhrwnT:MDcpEBMLfQcubV5wGE96YyXDTLdoT

Score

8^/10

evasion

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
2224	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-1-5-21-2231940048-779848787-2990559741-1000\Control Panel\International\Geo\Nation	NEAS.5a6f2bef8250643387465d7b88a73d00_JC.exe

Executes dropped EXE 1 IoCs

pid	Process
4308	riyhost.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\Debug\riyhost.exe	NEAS.5a6f2bef8250643387465d7b88a73d00_JC.exe
File opened for modification	C:\Windows\Debug\riyhost.exe	NEAS.5a6f2bef8250643387465d7b88a73d00_JC.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

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	3468	NEAS.5a6f2bef8250643387465d7b88a73d00_JC.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3468 wrote to memory of 2224	3468	NEAS.5a6f2bef8250643387465d7b88a73d00_JC.exe	84
PID 3468 wrote to memory of 2224	3468	NEAS.5a6f2bef8250643387465d7b88a73d00_JC.exe	84
PID 3468 wrote to memory of 2224	3468	NEAS.5a6f2bef8250643387465d7b88a73d00_JC.exe	84
PID 3468 wrote to memory of 840	3468	NEAS.5a6f2bef8250643387465d7b88a73d00_JC.exe	87
PID 3468 wrote to memory of 840	3468	NEAS.5a6f2bef8250643387465d7b88a73d00_JC.exe	87
PID 3468 wrote to memory of 840	3468	NEAS.5a6f2bef8250643387465d7b88a73d00_JC.exe	87

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2224	attrib.exe

C:\Users\Admin\AppData\Local\Temp\NEAS.5a6f2bef8250643387465d7b88a73d00_JC.exe
"C:\Users\Admin\AppData\Local\Temp\NEAS.5a6f2bef8250643387465d7b88a73d00_JC.exe"
1⤵
- Checks computer location settings
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3468
- 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
  - Views/modifies file attributes
  PID:2224
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\NEAS5A~1.EXE > nul
  2⤵
  PID:840

C:\Windows\Debug\riyhost.exe
C:\Windows\Debug\riyhost.exe
1⤵
- Executes dropped EXE
PID:4308

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\Debug\riyhost.exe

Filesize
58KB

MD5
d56a7fae756745958775cdf90c719bd1

SHA1
85bbf95097c0e4f49fcb06a74be1441617b2e7ff

SHA256
955f1b61600b08a300d6ed4e44d91dac065713fa54356f3fd8b65efde7f349fc

SHA512
90cde0aa9f06027657d85d62e910bb9f77158d16e04dcd846751c4864581db808d80c3fd825e4c4cc37c92c11f58afa9f4f0f1bc3f62e3642fb7e25e1c5fcc11

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C:\Windows\debug\riyhost.exe

Filesize
58KB

MD5
d56a7fae756745958775cdf90c719bd1

SHA1
85bbf95097c0e4f49fcb06a74be1441617b2e7ff

SHA256
955f1b61600b08a300d6ed4e44d91dac065713fa54356f3fd8b65efde7f349fc

SHA512
90cde0aa9f06027657d85d62e910bb9f77158d16e04dcd846751c4864581db808d80c3fd825e4c4cc37c92c11f58afa9f4f0f1bc3f62e3642fb7e25e1c5fcc11

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads