2980e4ce8783e25aad73add6723519b845a524158d1d6be1ef78cf15b88d3760

Analysis

max time kernel
143s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
18-01-2024 12:02

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General

Target

6551041809c22dd6d0cb0ffbf4a68ab8.exe
Size

695KB
MD5

6551041809c22dd6d0cb0ffbf4a68ab8
SHA1

e64b8a5b2828c892938ecf05df445218eba37f42
SHA256

2980e4ce8783e25aad73add6723519b845a524158d1d6be1ef78cf15b88d3760
SHA512

dd14a3a64119a8538affa638d66330ab43e6536f5c5f64e7ad75c4d71057b2f9df6dfde180e1dd34b727d36ac67a0910fcc1cb4686c9003eaf657f6188498f60
SSDEEP

12288:DC0NZyZL3/BRPTIWPoHwKtJNhPVG/PYb7U8tF3Z4mxxXoEtlK+kt9T2Mb:ryZ3p5XFWNhPQob7U8tQmX4Gq

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2680	rejoice45.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\_rejoice45.exe	rejoice45.exe
File opened for modification	C:\Windows\SysWOW64\_rejoice45.exe	rejoice45.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\Microsoft Shared\MSINFO\rejoice45.exe	6551041809c22dd6d0cb0ffbf4a68ab8.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\MSINFO\rejoice45.exe	6551041809c22dd6d0cb0ffbf4a68ab8.exe
File created	C:\Program Files\Common Files\Microsoft Shared\MSINFO\Delet.bat	6551041809c22dd6d0cb0ffbf4a68ab8.exe

Program crash 3 IoCs

pid	pid_target	Process	procid_target
3092	3228	WerFault.exe	84
5036	2680	WerFault.exe	91
3224	2680	WerFault.exe	91

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3228 wrote to memory of 2680	3228	6551041809c22dd6d0cb0ffbf4a68ab8.exe	91
PID 3228 wrote to memory of 2680	3228	6551041809c22dd6d0cb0ffbf4a68ab8.exe	91
PID 3228 wrote to memory of 2680	3228	6551041809c22dd6d0cb0ffbf4a68ab8.exe	91
PID 2680 wrote to memory of 1576	2680	rejoice45.exe	94
PID 2680 wrote to memory of 1576	2680	rejoice45.exe	94
PID 2680 wrote to memory of 1576	2680	rejoice45.exe	94
PID 3228 wrote to memory of 4280	3228	6551041809c22dd6d0cb0ffbf4a68ab8.exe	97
PID 3228 wrote to memory of 4280	3228	6551041809c22dd6d0cb0ffbf4a68ab8.exe	97
PID 3228 wrote to memory of 4280	3228	6551041809c22dd6d0cb0ffbf4a68ab8.exe	97

C:\Users\Admin\AppData\Local\Temp\6551041809c22dd6d0cb0ffbf4a68ab8.exe
"C:\Users\Admin\AppData\Local\Temp\6551041809c22dd6d0cb0ffbf4a68ab8.exe"
1⤵
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:3228
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3228 -s 324
  2⤵
  - Program crash
  PID:3092
- C:\Program Files\Common Files\Microsoft Shared\MSINFO\rejoice45.exe
  "C:\Program Files\Common Files\Microsoft Shared\MSINFO\rejoice45.exe"
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:2680
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2680 -s 324
    3⤵
    - Program crash
    PID:5036
- - C:\Windows\SysWOW64\calc.exe
    "C:\Windows\system32\calc.exe"
    3⤵
    PID:1576
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2680 -s 692
    3⤵
    - Program crash
    PID:3224
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Program Files\Common Files\Microsoft Shared\MSINFO\Delet.bat""
  2⤵
  PID:4280

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 3228 -ip 3228
1⤵
PID:5008

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 2680 -ip 2680
1⤵
PID:2420

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 2680 -ip 2680
1⤵
PID:2164

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

C:\Program Files\Common Files\Microsoft Shared\MSINFO\Delet.bat

Filesize
184B

MD5
8a4d19b69d10ddb2f979af22e3667736

SHA1
1ccc413e2cf30c43b594ddaedeea68db690e9051

SHA256
d94f93dbe161ff2c72058ffe7834623c2777e9df0caa1960ac335a0d203132ed

SHA512
2e45134c6c92baa3288823b44a2f2288770f2f5d218981bba54e2baeca336785cb0f6a816fa8555d33c906b090570b6cc133a0625c2a3065eb1f13b926fea42d

Download Submit
C:\Program Files\Common Files\microsoft shared\MSInfo\rejoice45.exe

Filesize
695KB

MD5
6551041809c22dd6d0cb0ffbf4a68ab8

SHA1
e64b8a5b2828c892938ecf05df445218eba37f42

SHA256
2980e4ce8783e25aad73add6723519b845a524158d1d6be1ef78cf15b88d3760

SHA512
dd14a3a64119a8538affa638d66330ab43e6536f5c5f64e7ad75c4d71057b2f9df6dfde180e1dd34b727d36ac67a0910fcc1cb4686c9003eaf657f6188498f60

Download Submit
memory/2680-64-0x0000000000A90000-0x0000000000AE4000-memory.dmp

Filesize
336KB

Download
memory/2680-70-0x00000000033E0000-0x00000000033FB000-memory.dmp

Filesize
108KB

Download
memory/2680-67-0x00000000033E0000-0x00000000033FB000-memory.dmp

Filesize
108KB

Download
memory/2680-66-0x00000000033E0000-0x00000000033FB000-memory.dmp

Filesize
108KB

Download
memory/2680-114-0x0000000000400000-0x0000000000570000-memory.dmp

Filesize
1.4MB

Download
memory/2680-65-0x00000000033E0000-0x00000000033FB000-memory.dmp

Filesize
108KB

Download
memory/3228-52-0x00000000033E0000-0x00000000033FB000-memory.dmp

Filesize
108KB

Download
memory/3228-49-0x00000000033E0000-0x00000000033FB000-memory.dmp

Filesize
108KB

Download
memory/3228-5-0x00000000022F0000-0x00000000022F1000-memory.dmp

Filesize
4KB

Download
memory/3228-6-0x00000000022E0000-0x00000000022E1000-memory.dmp

Filesize
4KB

Download
memory/3228-7-0x0000000002470000-0x0000000002471000-memory.dmp

Filesize
4KB

Download
memory/3228-8-0x0000000002460000-0x0000000002461000-memory.dmp

Filesize
4KB

Download
memory/3228-9-0x0000000002490000-0x0000000002491000-memory.dmp

Filesize
4KB

Download
memory/3228-18-0x00000000033E0000-0x00000000033FB000-memory.dmp

Filesize
108KB

Download
memory/3228-17-0x00000000033E0000-0x00000000033FB000-memory.dmp

Filesize
108KB

Download
memory/3228-16-0x00000000033E0000-0x00000000033FB000-memory.dmp

Filesize
108KB

Download
memory/3228-19-0x00000000033E0000-0x00000000033FB000-memory.dmp

Filesize
108KB

Download
memory/3228-15-0x00000000033E0000-0x00000000033FB000-memory.dmp

Filesize
108KB

Download
memory/3228-21-0x00000000033E0000-0x00000000033FB000-memory.dmp

Filesize
108KB

Download
memory/3228-32-0x00000000033E0000-0x00000000033FB000-memory.dmp

Filesize
108KB

Download
memory/3228-31-0x00000000033E0000-0x00000000033FB000-memory.dmp

Filesize
108KB

Download
memory/3228-33-0x00000000033E0000-0x00000000033FB000-memory.dmp

Filesize
108KB

Download
memory/3228-36-0x00000000033E0000-0x00000000033FB000-memory.dmp

Filesize
108KB

Download
memory/3228-44-0x00000000033E0000-0x00000000033FB000-memory.dmp

Filesize
108KB

Download
memory/3228-55-0x00000000033E0000-0x00000000033FB000-memory.dmp

Filesize
108KB

Download
memory/3228-60-0x0000000003440000-0x0000000003441000-memory.dmp

Filesize
4KB

Download
memory/3228-59-0x00000000033E0000-0x00000000033FB000-memory.dmp

Filesize
108KB

Download
memory/3228-58-0x00000000024A0000-0x00000000024A1000-memory.dmp

Filesize
4KB

Download
memory/3228-57-0x00000000022D0000-0x00000000022D1000-memory.dmp

Filesize
4KB

Download
memory/3228-56-0x00000000033E0000-0x00000000033FB000-memory.dmp

Filesize
108KB

Download
memory/3228-54-0x00000000033E0000-0x00000000033FB000-memory.dmp

Filesize
108KB

Download
memory/3228-53-0x00000000033E0000-0x00000000033FB000-memory.dmp

Filesize
108KB

Download
memory/3228-3-0x0000000002310000-0x0000000002311000-memory.dmp

Filesize
4KB

Download
memory/3228-51-0x00000000033E0000-0x00000000033FB000-memory.dmp

Filesize
108KB

Download
memory/3228-50-0x00000000033E0000-0x00000000033FB000-memory.dmp

Filesize
108KB

Download
memory/3228-4-0x0000000002480000-0x0000000002481000-memory.dmp

Filesize
4KB

Download
memory/3228-48-0x00000000033E0000-0x00000000033FB000-memory.dmp

Filesize
108KB

Download
memory/3228-47-0x00000000033E0000-0x00000000033FB000-memory.dmp

Filesize
108KB

Download
memory/3228-46-0x00000000033E0000-0x00000000033FB000-memory.dmp

Filesize
108KB

Download
memory/3228-45-0x00000000033E0000-0x00000000033FB000-memory.dmp

Filesize
108KB

Download
memory/3228-43-0x00000000033E0000-0x00000000033FB000-memory.dmp

Filesize
108KB

Download
memory/3228-42-0x00000000033E0000-0x00000000033FB000-memory.dmp

Filesize
108KB

Download
memory/3228-41-0x00000000033E0000-0x00000000033FB000-memory.dmp

Filesize
108KB

Download
memory/3228-40-0x00000000033E0000-0x00000000033FB000-memory.dmp

Filesize
108KB

Download
memory/3228-39-0x00000000033E0000-0x00000000033FB000-memory.dmp

Filesize
108KB

Download
memory/3228-38-0x00000000033E0000-0x00000000033FB000-memory.dmp

Filesize
108KB

Download
memory/3228-37-0x00000000033E0000-0x00000000033FB000-memory.dmp

Filesize
108KB

Download
memory/3228-35-0x00000000033E0000-0x00000000033FB000-memory.dmp

Filesize
108KB

Download
memory/3228-34-0x00000000033E0000-0x00000000033FB000-memory.dmp

Filesize
108KB

Download
memory/3228-30-0x00000000033E0000-0x00000000033FB000-memory.dmp

Filesize
108KB

Download
memory/3228-29-0x00000000033E0000-0x00000000033FB000-memory.dmp

Filesize
108KB

Download
memory/3228-28-0x00000000033E0000-0x00000000033FB000-memory.dmp

Filesize
108KB

Download
memory/3228-27-0x00000000033E0000-0x00000000033FB000-memory.dmp

Filesize
108KB

Download
memory/3228-26-0x00000000033E0000-0x00000000033FB000-memory.dmp

Filesize
108KB

Download
memory/3228-25-0x00000000033E0000-0x00000000033FB000-memory.dmp

Filesize
108KB

Download
memory/3228-24-0x00000000033E0000-0x00000000033FB000-memory.dmp

Filesize
108KB

Download
memory/3228-20-0x00000000033E0000-0x00000000033FB000-memory.dmp

Filesize
108KB

Download
memory/3228-2-0x0000000002450000-0x0000000002451000-memory.dmp

Filesize
4KB

Download
memory/3228-14-0x00000000033E0000-0x00000000033FB000-memory.dmp

Filesize
108KB

Download
memory/3228-13-0x00000000033E0000-0x00000000033FB000-memory.dmp

Filesize
108KB

Download
memory/3228-12-0x00000000033E0000-0x00000000033FB000-memory.dmp

Filesize
108KB

Download
memory/3228-11-0x00000000033E0000-0x00000000033FB000-memory.dmp

Filesize
108KB

Download
memory/3228-10-0x0000000002300000-0x0000000002301000-memory.dmp

Filesize
4KB

Download
memory/3228-111-0x0000000000400000-0x0000000000570000-memory.dmp

Filesize
1.4MB

Download
memory/3228-1-0x0000000000A60000-0x0000000000AB4000-memory.dmp

Filesize
336KB

Download
memory/3228-0-0x0000000000400000-0x0000000000570000-memory.dmp

Filesize
1.4MB

Download