c2f95fa479851ed9a61d16377adc0d2c0c85b735cdeb992cf939fb4a2167dd3f

Analysis

max time kernel
151s
max time network
163s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
24-11-2022 19:41

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General

Target

c2f95fa479851ed9a61d16377adc0d2c0c85b735cdeb992cf939fb4a2167dd3f.exe
Size

16KB
MD5

c61ede94f28262d45c5110c0060ea9c7
SHA1

db52db1a8cc9b292395da29aac5ef03f29995b19
SHA256

c2f95fa479851ed9a61d16377adc0d2c0c85b735cdeb992cf939fb4a2167dd3f
SHA512

c58d57d9f750fa8fd32b85f311576b46cfe9e2edc61fe43cc705b7e15722e5e58087d19a5f66e3fa47bf573bf250b4608c3ff3a45960be66871ac71673e0cede
SSDEEP

384:2nK0EimEwmHm8md9ExspMWTPjFEgYYvKmsROKjw:2nFEXEw4rmd+irjzumuj

Score

8^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

nyrtuc.exe

pid process

1732 nyrtuc.exe

pid	process
1732	nyrtuc.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
C:\Windows\SysWOW64\nyrtuc.exe	upx
behavioral1/memory/340-55-0x0000000000400000-0x0000000000411000-memory.dmp	upx
behavioral1/memory/1732-56-0x0000000000400000-0x0000000000411000-memory.dmp	upx
C:\Windows\SysWOW64\nyrtuc.exe	upx
behavioral1/memory/1732-58-0x0000000000400000-0x0000000000411000-memory.dmp	upx

Drops file in System32 directory 2 IoCs

Processes:

c2f95fa479851ed9a61d16377adc0d2c0c85b735cdeb992cf939fb4a2167dd3f.exe

description	ioc	process
File created	C:\Windows\SysWOW64\nyrtuc.exe	c2f95fa479851ed9a61d16377adc0d2c0c85b735cdeb992cf939fb4a2167dd3f.exe
File opened for modification	C:\Windows\SysWOW64\nyrtuc.exe	c2f95fa479851ed9a61d16377adc0d2c0c85b735cdeb992cf939fb4a2167dd3f.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:

nyrtuc.exe

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

Suspicious behavior: RenamesItself 1 IoCs

Processes:

c2f95fa479851ed9a61d16377adc0d2c0c85b735cdeb992cf939fb4a2167dd3f.exe

pid process

340 c2f95fa479851ed9a61d16377adc0d2c0c85b735cdeb992cf939fb4a2167dd3f.exe

pid	process
340	c2f95fa479851ed9a61d16377adc0d2c0c85b735cdeb992cf939fb4a2167dd3f.exe

C:\Users\Admin\AppData\Local\Temp\c2f95fa479851ed9a61d16377adc0d2c0c85b735cdeb992cf939fb4a2167dd3f.exe
"C:\Users\Admin\AppData\Local\Temp\c2f95fa479851ed9a61d16377adc0d2c0c85b735cdeb992cf939fb4a2167dd3f.exe"
1⤵
- Drops file in System32 directory
- Suspicious behavior: RenamesItself
PID:340

C:\Windows\SysWOW64\nyrtuc.exe
C:\Windows\SysWOW64\nyrtuc.exe
1⤵
- Executes dropped EXE
- Checks processor information in registry
PID:1732

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\nyrtuc.exe
Filesize
16KB

MD5
c61ede94f28262d45c5110c0060ea9c7

SHA1
db52db1a8cc9b292395da29aac5ef03f29995b19

SHA256
c2f95fa479851ed9a61d16377adc0d2c0c85b735cdeb992cf939fb4a2167dd3f

SHA512
c58d57d9f750fa8fd32b85f311576b46cfe9e2edc61fe43cc705b7e15722e5e58087d19a5f66e3fa47bf573bf250b4608c3ff3a45960be66871ac71673e0cede

Download Submit
C:\Windows\SysWOW64\nyrtuc.exe
Filesize
16KB

MD5
c61ede94f28262d45c5110c0060ea9c7

SHA1
db52db1a8cc9b292395da29aac5ef03f29995b19

SHA256
c2f95fa479851ed9a61d16377adc0d2c0c85b735cdeb992cf939fb4a2167dd3f

SHA512
c58d57d9f750fa8fd32b85f311576b46cfe9e2edc61fe43cc705b7e15722e5e58087d19a5f66e3fa47bf573bf250b4608c3ff3a45960be66871ac71673e0cede

Download Submit
memory/340-55-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/1732-56-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/1732-58-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download