09edb74c964edd38ba8a471698f5f983c959d048bad56c6a66dfeeb6f9c65647

Analysis

max time kernel
141s
max time network
137s
platform
windows7_x64
resource
win7-20230831-en
resource tags

arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
submitted
05/10/2023, 19:30

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

b3b0a773ef7fd8bdcc8d0ccf9e0fe217_JC.exe
Size

56KB
MD5

b3b0a773ef7fd8bdcc8d0ccf9e0fe217
SHA1

322ce5c9ab888489b612a22aac2a2fb49139b307
SHA256

09edb74c964edd38ba8a471698f5f983c959d048bad56c6a66dfeeb6f9c65647
SHA512

f666cdc13b78818f5320d7f91610637d82414cdd9bc8f3fae8d65a12cca84fbf09dde6e17c73bce662ad567f12091251e504f7fd35849b4978d421a12f250476
SSDEEP

384:+5rDuuOFpEauMLfQDb2pproT/z4D1O1GJE6Al6z/yXuTLhrw:MDcpEBMLfQcubc1IGE96jyXuTLdw

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
2160	attrib.exe

Deletes itself 1 IoCs

pid	Process
1664	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2224	iuyhost.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\Debug\iuyhost.exe	b3b0a773ef7fd8bdcc8d0ccf9e0fe217_JC.exe
File opened for modification	C:\Windows\Debug\iuyhost.exe	b3b0a773ef7fd8bdcc8d0ccf9e0fe217_JC.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

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2956	b3b0a773ef7fd8bdcc8d0ccf9e0fe217_JC.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2956 wrote to memory of 2160	2956	b3b0a773ef7fd8bdcc8d0ccf9e0fe217_JC.exe	28
PID 2956 wrote to memory of 2160	2956	b3b0a773ef7fd8bdcc8d0ccf9e0fe217_JC.exe	28
PID 2956 wrote to memory of 2160	2956	b3b0a773ef7fd8bdcc8d0ccf9e0fe217_JC.exe	28
PID 2956 wrote to memory of 2160	2956	b3b0a773ef7fd8bdcc8d0ccf9e0fe217_JC.exe	28
PID 2956 wrote to memory of 1664	2956	b3b0a773ef7fd8bdcc8d0ccf9e0fe217_JC.exe	31
PID 2956 wrote to memory of 1664	2956	b3b0a773ef7fd8bdcc8d0ccf9e0fe217_JC.exe	31
PID 2956 wrote to memory of 1664	2956	b3b0a773ef7fd8bdcc8d0ccf9e0fe217_JC.exe	31
PID 2956 wrote to memory of 1664	2956	b3b0a773ef7fd8bdcc8d0ccf9e0fe217_JC.exe	31

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2160	attrib.exe

C:\Users\Admin\AppData\Local\Temp\b3b0a773ef7fd8bdcc8d0ccf9e0fe217_JC.exe
"C:\Users\Admin\AppData\Local\Temp\b3b0a773ef7fd8bdcc8d0ccf9e0fe217_JC.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2956
- 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:2160
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\B3B0A7~1.EXE > nul
  2⤵
  - Deletes itself
  PID:1664

C:\Windows\Debug\iuyhost.exe
C:\Windows\Debug\iuyhost.exe
1⤵
- Executes dropped EXE
PID:2224

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

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\Debug\iuyhost.exe

Filesize
56KB

MD5
0906c63dcde9f4c887ff6c2c6d2af095

SHA1
e853360dd7e7cce2642071e8ad5d406db253889d

SHA256
dd99d254046a836f277428b0eb1de6928b956af0716dcf8837e6d1bf59d01c97

SHA512
16302b93005be10aecf7dabd9ea6be997a0e47e778d70d5b24fe1b37e9bce2430b7d62ef2c9cc35378319f351edca3acc0330abd9a7472a1a3aa4b4ddc0eaee1

Download Submit
C:\Windows\debug\iuyhost.exe

Filesize
56KB

MD5
0906c63dcde9f4c887ff6c2c6d2af095

SHA1
e853360dd7e7cce2642071e8ad5d406db253889d

SHA256
dd99d254046a836f277428b0eb1de6928b956af0716dcf8837e6d1bf59d01c97

SHA512
16302b93005be10aecf7dabd9ea6be997a0e47e778d70d5b24fe1b37e9bce2430b7d62ef2c9cc35378319f351edca3acc0330abd9a7472a1a3aa4b4ddc0eaee1

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads