d5b7706d5ac679e1e8d9096bb11fd9c6a09267f7f664ea54ca648cadc3ca637a

Analysis

max time kernel
143s
max time network
127s
platform
windows7_x64
resource
win7-20230831-en
resource tags

arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
submitted
01/10/2023, 12:18

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General

Target

7ef506831605a8af28bcdeeef3e42719_JC.exe
Size

59KB
MD5

7ef506831605a8af28bcdeeef3e42719
SHA1

7877eec4e4bf878d24df54535fa0805e2efaf5f2
SHA256

d5b7706d5ac679e1e8d9096bb11fd9c6a09267f7f664ea54ca648cadc3ca637a
SHA512

d18a7be274df266c188641268c6c9a0afa8472902005f8e5e2fdb7f05b18ca7aed830f1bacba2af1bcdf9697a95b4be688b6f06b3033041bad2b116de879b047
SSDEEP

384:+5rDuuOFpEauMLfQDb2pproT/z4o1GJE6Al6zVyXeTLhrqNNNNLwwwwgD:MDcpEBMLfQcubtGE96ByXeTLdx

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
3000	attrib.exe

Deletes itself 1 IoCs

pid	Process
2612	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2060	iuyhost.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\Debug\iuyhost.exe	7ef506831605a8af28bcdeeef3e42719_JC.exe
File opened for modification	C:\Windows\Debug\iuyhost.exe	7ef506831605a8af28bcdeeef3e42719_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	2076	7ef506831605a8af28bcdeeef3e42719_JC.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2076 wrote to memory of 3000	2076	7ef506831605a8af28bcdeeef3e42719_JC.exe	28
PID 2076 wrote to memory of 3000	2076	7ef506831605a8af28bcdeeef3e42719_JC.exe	28
PID 2076 wrote to memory of 3000	2076	7ef506831605a8af28bcdeeef3e42719_JC.exe	28
PID 2076 wrote to memory of 3000	2076	7ef506831605a8af28bcdeeef3e42719_JC.exe	28
PID 2076 wrote to memory of 2612	2076	7ef506831605a8af28bcdeeef3e42719_JC.exe	31
PID 2076 wrote to memory of 2612	2076	7ef506831605a8af28bcdeeef3e42719_JC.exe	31
PID 2076 wrote to memory of 2612	2076	7ef506831605a8af28bcdeeef3e42719_JC.exe	31
PID 2076 wrote to memory of 2612	2076	7ef506831605a8af28bcdeeef3e42719_JC.exe	31

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
3000	attrib.exe

C:\Users\Admin\AppData\Local\Temp\7ef506831605a8af28bcdeeef3e42719_JC.exe
"C:\Users\Admin\AppData\Local\Temp\7ef506831605a8af28bcdeeef3e42719_JC.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2076
- 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:3000
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\7EF506~1.EXE > nul
  2⤵
  - Deletes itself
  PID:2612

C:\Windows\Debug\iuyhost.exe
C:\Windows\Debug\iuyhost.exe
1⤵
- Executes dropped EXE
PID:2060

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

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Downloads

C:\Windows\Debug\iuyhost.exe

Filesize
59KB

MD5
83708997f9be4cfab020f9a439ea0627

SHA1
edc6de829008cc3526e5f9f5978219fcab0d7383

SHA256
e6e8daf93e43796c51c868d635560da8cce639efabafe057b2664153ce658191

SHA512
fd902104dcc8491c251e549abb25e81bd237f0c1cc93d049ae959574f5025782d618dec9f551549662a08c5de6e4f4201f764bbf899b4befe41bde6ed22d278d

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

Filesize
59KB

MD5
83708997f9be4cfab020f9a439ea0627

SHA1
edc6de829008cc3526e5f9f5978219fcab0d7383

SHA256
e6e8daf93e43796c51c868d635560da8cce639efabafe057b2664153ce658191

SHA512
fd902104dcc8491c251e549abb25e81bd237f0c1cc93d049ae959574f5025782d618dec9f551549662a08c5de6e4f4201f764bbf899b4befe41bde6ed22d278d

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads