c173f94932fef39a323eff3c2c91e9a5a49a56875cd9f71685add6658ce7fdb2

Analysis

max time kernel
162s
max time network
176s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
26/12/2023, 11:20

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General

Target

6a606f43c1efe9e9c3e2c20d5ae7913d.exe
Size

1.4MB
MD5

6a606f43c1efe9e9c3e2c20d5ae7913d
SHA1

973bc27890a409fdd834932b4696035ad2667180
SHA256

c173f94932fef39a323eff3c2c91e9a5a49a56875cd9f71685add6658ce7fdb2
SHA512

f77df6618e2d097152b6aa05298a75d8bfbfe70f4b4ec5627a66f154655eebc354cd5b7dfc93d705fcdeadd768a54f4daaf52a4c7482dc2ca7d4d4d3a8f72df3
SSDEEP

24576:F6yJMY9UFoRDhkeYM1jJR97zUbia9JVe0hs5WfBiERJchVML1bT6Eu:UY9UORVOM1jJHzaiape0hsABFRJch6LS

Score

9^/10

rezer0 upx

Malware Config

Signatures

ReZer0 packer 1 IoCs

Detects ReZer0, a packer with multiple versions used in various campaigns.

rezer0

resource	yara_rule
behavioral2/memory/1640-28-0x0000000005D50000-0x0000000005D7C000-memory.dmp	rezer0

Executes dropped EXE 1 IoCs

pid	Process
1640	test.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1856-0-0x0000000000400000-0x00000000006F1000-memory.dmp	upx
behavioral2/memory/1856-2-0x0000000000400000-0x00000000006F1000-memory.dmp	upx

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1856 wrote to memory of 2496	1856	6a606f43c1efe9e9c3e2c20d5ae7913d.exe	92
PID 1856 wrote to memory of 2496	1856	6a606f43c1efe9e9c3e2c20d5ae7913d.exe	92
PID 1856 wrote to memory of 2496	1856	6a606f43c1efe9e9c3e2c20d5ae7913d.exe	92
PID 2496 wrote to memory of 1640	2496	cmd.exe	94
PID 2496 wrote to memory of 1640	2496	cmd.exe	94
PID 2496 wrote to memory of 1640	2496	cmd.exe	94

C:\Users\Admin\AppData\Local\Temp\6a606f43c1efe9e9c3e2c20d5ae7913d.exe
"C:\Users\Admin\AppData\Local\Temp\6a606f43c1efe9e9c3e2c20d5ae7913d.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1856
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c test.exe
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2496
- - C:\Users\Admin\AppData\Local\Temp\test.exe
    test.exe
    3⤵
    - Executes dropped EXE
    PID:1640

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

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

Filesize
330KB

MD5
261aa73f93c90dcec0c36a51cb9b5dee

SHA1
b0c41e06cd2ded81706820423db40bf8fea2c957

SHA256
ae160b749914bd56aecbcf43d56a59bde2069a145682b2911fe50c6adabe1b54

SHA512
7b90335b4a7db7b5056f6d60db642754038dc544bd2c1f82e68b1f8e339bf70227f0c08d157b4ca1004448fab7d109f0239196f242d0edeab978de9025a3c0ed

Download Submit
memory/1640-14-0x0000000005E00000-0x00000000063A4000-memory.dmp

Filesize
5.6MB

Download
memory/1640-8-0x0000000074F90000-0x0000000075740000-memory.dmp

Filesize
7.7MB

Download
memory/1640-11-0x0000000000E10000-0x0000000000E68000-memory.dmp

Filesize
352KB

Download
memory/1640-13-0x0000000074F90000-0x0000000075740000-memory.dmp

Filesize
7.7MB

Download
memory/1640-16-0x0000000005AF0000-0x0000000005B82000-memory.dmp

Filesize
584KB

Download
memory/1640-21-0x0000000005D10000-0x0000000005D20000-memory.dmp

Filesize
64KB

Download
memory/1640-23-0x0000000001880000-0x000000000188A000-memory.dmp

Filesize
40KB

Download
memory/1640-25-0x0000000001870000-0x0000000001878000-memory.dmp

Filesize
32KB

Download
memory/1640-26-0x0000000005D10000-0x0000000005D20000-memory.dmp

Filesize
64KB

Download
memory/1640-28-0x0000000005D50000-0x0000000005D7C000-memory.dmp

Filesize
176KB

Download
memory/1640-29-0x0000000006830000-0x00000000068CC000-memory.dmp

Filesize
624KB

Download
memory/1856-2-0x0000000000400000-0x00000000006F1000-memory.dmp

Filesize
2.9MB

Download
memory/1856-0-0x0000000000400000-0x00000000006F1000-memory.dmp

Filesize
2.9MB

Download