4dc3cb34f5d7f96c506d4d188116c2c8414ed131c7e5222d299c2497e26a8aa9

Analysis

max time kernel
141s
max time network
125s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
07/05/2024, 12:32

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General

Target

7d5d806de08dac3e81670d25f8b5a770_NEAS.exe
Size

83KB
MD5

7d5d806de08dac3e81670d25f8b5a770
SHA1

58c1c37d70c41e854fbe5b3dbd74298de63b4b78
SHA256

4dc3cb34f5d7f96c506d4d188116c2c8414ed131c7e5222d299c2497e26a8aa9
SHA512

0cfecdc8a26691e5dfc75d20c346a157feb98383241c5e375a2bf5938f20271942dd7c4c6b640ac6735cae587aa6ff564d239947e5d7363e1ed4815671fd448c
SSDEEP

1536:yr3Z5IfQmv81a7pP1xF3yX2tM/jTEwwwEiiiiE:WJOfQm01q9X3yX2q/jTN

Score

8^/10

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
300	attrib.exe

Deletes itself 1 IoCs

pid	Process
2448	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2128	iuyhost.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2164-0-0x0000000000400000-0x0000000000416000-memory.dmp	upx
behavioral1/files/0x00070000000122cd-3.dat	upx
behavioral1/memory/2128-5-0x0000000000400000-0x0000000000416000-memory.dmp	upx
behavioral1/memory/2128-6-0x0000000000400000-0x0000000000416000-memory.dmp	upx

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\Debug\iuyhost.exe	7d5d806de08dac3e81670d25f8b5a770_NEAS.exe
File opened for modification	C:\Windows\Debug\iuyhost.exe	7d5d806de08dac3e81670d25f8b5a770_NEAS.exe
File opened for modification	C:\Windows\Debug\iuyhost.exe	attrib.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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	2164	7d5d806de08dac3e81670d25f8b5a770_NEAS.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2164 wrote to memory of 300	2164	7d5d806de08dac3e81670d25f8b5a770_NEAS.exe	28
PID 2164 wrote to memory of 300	2164	7d5d806de08dac3e81670d25f8b5a770_NEAS.exe	28
PID 2164 wrote to memory of 300	2164	7d5d806de08dac3e81670d25f8b5a770_NEAS.exe	28
PID 2164 wrote to memory of 300	2164	7d5d806de08dac3e81670d25f8b5a770_NEAS.exe	28
PID 2164 wrote to memory of 2448	2164	7d5d806de08dac3e81670d25f8b5a770_NEAS.exe	31
PID 2164 wrote to memory of 2448	2164	7d5d806de08dac3e81670d25f8b5a770_NEAS.exe	31
PID 2164 wrote to memory of 2448	2164	7d5d806de08dac3e81670d25f8b5a770_NEAS.exe	31
PID 2164 wrote to memory of 2448	2164	7d5d806de08dac3e81670d25f8b5a770_NEAS.exe	31

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
300	attrib.exe

C:\Users\Admin\AppData\Local\Temp\7d5d806de08dac3e81670d25f8b5a770_NEAS.exe
"C:\Users\Admin\AppData\Local\Temp\7d5d806de08dac3e81670d25f8b5a770_NEAS.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2164
- 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
  - Views/modifies file attributes
  PID:300
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\7D5D80~1.EXE > nul
  2⤵
  - Deletes itself
  PID:2448

C:\Windows\Debug\iuyhost.exe
C:\Windows\Debug\iuyhost.exe
1⤵
- Executes dropped EXE
- Checks processor information in registry
PID:2128

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\iuyhost.exe

Filesize
83KB

MD5
ee6a0950036705fc4fb68d20929d8494

SHA1
6c908eafbc8c4d5c2aa2047eaed7cb644d1665ad

SHA256
d9f68d2864165fb8ef862b73f3b63ddde3ca1dbf73e952d5ad36a0890a3bdf8d

SHA512
505bcce5e59549291e3be5510c900d9594b02c9b4d1effcc2742ca034cc4aad180d2e5ecf535b6074a96b137e8f53e975507635cd0f43e3e6c49144543b3e6ff

Download Submit
memory/2128-5-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/2128-6-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/2164-0-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads