28b14399f4973a5eb94ccaa87459b2e342c4babef324963cbf08d11f5b1002c0

Analysis

max time kernel
117s
max time network
119s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
26/12/2023, 06:58

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General

Target

5b122e462f9785c9355ea925c690946e.exe
Size

583KB
MD5

5b122e462f9785c9355ea925c690946e
SHA1

8d4e26cc65a5b97f02b73a4811a19d7ee891fa96
SHA256

28b14399f4973a5eb94ccaa87459b2e342c4babef324963cbf08d11f5b1002c0
SHA512

1a043239904244936e53bc326976a480edc26941701c965de684997c5301a5d4f49aef3cd182ba2f76a515114e24ddc9081773d1f0ac45ba85ecef0f9407fd91
SSDEEP

12288:beykUj6dav1aMuD6upVUzhV8R3qX7BHzqGoKre+0crnEC15NL:bOUj6UcPDPp6zhekRzXS+XDv15N

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2940	update.exe

Loads dropped DLL 5 IoCs

pid	Process
1320	5b122e462f9785c9355ea925c690946e.exe
2940	update.exe
2940	update.exe
2940	update.exe
2904	rundll32.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1320-13-0x0000000000400000-0x0000000000427000-memory.dmp	upx
behavioral1/memory/1320-0-0x0000000000400000-0x0000000000427000-memory.dmp	upx

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\t320062.ini	update.exe
File created	C:\Windows\SysWOW64\rpcss.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\rpcss.dll	rundll32.exe

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1972	2904	WerFault.exe	14

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2940	update.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2904	rundll32.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 1320 wrote to memory of 2940	1320	5b122e462f9785c9355ea925c690946e.exe	18
PID 1320 wrote to memory of 2940	1320	5b122e462f9785c9355ea925c690946e.exe	18
PID 1320 wrote to memory of 2940	1320	5b122e462f9785c9355ea925c690946e.exe	18
PID 1320 wrote to memory of 2940	1320	5b122e462f9785c9355ea925c690946e.exe	18
PID 1320 wrote to memory of 2940	1320	5b122e462f9785c9355ea925c690946e.exe	18
PID 1320 wrote to memory of 2940	1320	5b122e462f9785c9355ea925c690946e.exe	18
PID 1320 wrote to memory of 2940	1320	5b122e462f9785c9355ea925c690946e.exe	18
PID 2940 wrote to memory of 2868	2940	update.exe	17
PID 2940 wrote to memory of 2868	2940	update.exe	17
PID 2940 wrote to memory of 2868	2940	update.exe	17
PID 2940 wrote to memory of 2868	2940	update.exe	17
PID 2940 wrote to memory of 2868	2940	update.exe	17
PID 2940 wrote to memory of 2868	2940	update.exe	17
PID 2940 wrote to memory of 2868	2940	update.exe	17
PID 2868 wrote to memory of 2904	2868	cmd.exe	14
PID 2868 wrote to memory of 2904	2868	cmd.exe	14
PID 2868 wrote to memory of 2904	2868	cmd.exe	14
PID 2868 wrote to memory of 2904	2868	cmd.exe	14
PID 2868 wrote to memory of 2904	2868	cmd.exe	14
PID 2868 wrote to memory of 2904	2868	cmd.exe	14
PID 2868 wrote to memory of 2904	2868	cmd.exe	14
PID 2904 wrote to memory of 1972	2904	rundll32.exe	15
PID 2904 wrote to memory of 1972	2904	rundll32.exe	15
PID 2904 wrote to memory of 1972	2904	rundll32.exe	15
PID 2904 wrote to memory of 1972	2904	rundll32.exe	15
PID 2904 wrote to memory of 1972	2904	rundll32.exe	15
PID 2904 wrote to memory of 1972	2904	rundll32.exe	15
PID 2904 wrote to memory of 1972	2904	rundll32.exe	15

C:\Windows\SysWOW64\rundll32.exe
C:\Windows\system32\rundll32.exe C:\Users\Admin\AppData\Local\Temp\~~f760a1e.~~~ Install C:\Users\Admin\AppData\Local\Temp\update.exe
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2904
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2904 -s 352
  2⤵
  - Program crash
  PID:1972

C:\Windows\SysWOW64\cmd.exe
cmd /c C:\Windows\system32\rundll32.exe C:\Users\Admin\AppData\Local\Temp\~~f760a1e.~~~ Install C:\Users\Admin\AppData\Local\Temp\update.exe
1⤵
- Suspicious use of WriteProcessMemory
PID:2868

C:\Users\Admin\AppData\Local\Temp\update.exe
"C:\Users\Admin\AppData\Local\Temp\update.exe"
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2940

C:\Users\Admin\AppData\Local\Temp\5b122e462f9785c9355ea925c690946e.exe
"C:\Users\Admin\AppData\Local\Temp\5b122e462f9785c9355ea925c690946e.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1320

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\update.exe

Filesize
26KB

MD5
93d01beee530f6796129c19e54ac13a3

SHA1
c63a647b0939ecea5a3796670d09ba3c5d888d43

SHA256
7caa8870d407820fd1300dc7a77a052100562f2f24a13e46ad90e5516731855a

SHA512
6373040707d9cc37baf4dba5d3622b4c9ce202dc81b13f4b74235b0a80d3e94d517b7a2390f3be570e5ac1219cbd18943b51c1f861d7ba9aed1e1ecaa99d5cab

Download Submit
memory/1320-3-0x0000000000820000-0x0000000000847000-memory.dmp

Filesize
156KB

Download
memory/1320-2-0x0000000000820000-0x0000000000847000-memory.dmp

Filesize
156KB

Download
memory/1320-13-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/1320-1-0x0000000000820000-0x0000000000847000-memory.dmp

Filesize
156KB

Download
memory/1320-0-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/2940-20-0x0000000000401000-0x0000000000402000-memory.dmp

Filesize
4KB

Download