asyncrat | 3033956fcd540bc6d9f64fe4bce35b626deb627f7cc8394c19d1e3c07485ef61

Analysis

max time kernel
161s
max time network
166s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
01-02-2023 08:27

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General

Target

corrected the terms of payment.js
Size

226KB
MD5

280e79b75c74e2449baf87a246927342
SHA1

5b5376e5c25f25d65ba2717908ca0f559a0f0446
SHA256

3033956fcd540bc6d9f64fe4bce35b626deb627f7cc8394c19d1e3c07485ef61
SHA512

a6eecca1695fd32ba91c58b028342d96731bb3e8f7641fba00cdceebdedd32e95555eda6cbc29711c5dcd437763129e080666bb037141356e162da5391a49061
SSDEEP

6144:dKWuABY4W3vLv93KN4bwG0CehURoxNRHyM3:dKlIYu4UG7axWM3

Score

10^/10

asyncrat default persistence rat upx

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

87.237.165.133:6161

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
3
install
false
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers.
rat asyncrat

Async RAT payload 2 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1832-70-0x0000000000330000-0x0000000000342000-memory.dmp	asyncrat
behavioral1/memory/1832-71-0x0000000000400000-0x0000000000427000-memory.dmp	asyncrat

Executes dropped EXE 3 IoCs

Processes:

corrected the terms of payment.exefiomns.exefiomns.exe

pid process

1524 corrected the terms of payment.exe
1488 fiomns.exe
1832 fiomns.exe

pid	process
1524	corrected the terms of payment.exe
1488	fiomns.exe
1832	fiomns.exe

UPX packed file 1 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/1832-71-0x0000000000400000-0x0000000000427000-memory.dmp	upx

Loads dropped DLL 2 IoCs

Processes:

corrected the terms of payment.exefiomns.exe

pid process

1524 corrected the terms of payment.exe
1488 fiomns.exe

pid	process
1524	corrected the terms of payment.exe
1488	fiomns.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

fiomns.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\wwgkhtl = "C:\\Users\\Admin\\AppData\\Roaming\\xuuncym\\ktdvudbcvsiab.exe \"C:\\Users\\Admin\\AppData\\Local\\Temp\\fiomns.exe\" C:\\Users\\Admin\\AppData\\Loc"	fiomns.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

fiomns.exe

description pid process target process

PID 1488 set thread context of 1832 1488 fiomns.exe fiomns.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

fiomns.exe

pid process

1488 fiomns.exe

description	pid	process	target process
PID 1488 set thread context of 1832	1488	fiomns.exe	fiomns.exe

pid	process
1488	fiomns.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

wscript.execorrected the terms of payment.exefiomns.exe

description	pid	process	target process
PID 1852 wrote to memory of 1524	1852	wscript.exe	corrected the terms of payment.exe
PID 1852 wrote to memory of 1524	1852	wscript.exe	corrected the terms of payment.exe
PID 1852 wrote to memory of 1524	1852	wscript.exe	corrected the terms of payment.exe
PID 1852 wrote to memory of 1524	1852	wscript.exe	corrected the terms of payment.exe
PID 1524 wrote to memory of 1488	1524	corrected the terms of payment.exe	fiomns.exe
PID 1524 wrote to memory of 1488	1524	corrected the terms of payment.exe	fiomns.exe
PID 1524 wrote to memory of 1488	1524	corrected the terms of payment.exe	fiomns.exe
PID 1524 wrote to memory of 1488	1524	corrected the terms of payment.exe	fiomns.exe
PID 1488 wrote to memory of 1832	1488	fiomns.exe	fiomns.exe
PID 1488 wrote to memory of 1832	1488	fiomns.exe	fiomns.exe
PID 1488 wrote to memory of 1832	1488	fiomns.exe	fiomns.exe
PID 1488 wrote to memory of 1832	1488	fiomns.exe	fiomns.exe
PID 1488 wrote to memory of 1832	1488	fiomns.exe	fiomns.exe

C:\Windows\system32\wscript.exe
wscript.exe "C:\Users\Admin\AppData\Local\Temp\corrected the terms of payment.js"
1⤵
- Suspicious use of WriteProcessMemory
PID:1852

C:\Users\Admin\AppData\Roaming\corrected the terms of payment.exe
"C:\Users\Admin\AppData\Roaming\corrected the terms of payment.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1524

C:\Users\Admin\AppData\Local\Temp\fiomns.exe
"C:\Users\Admin\AppData\Local\Temp\fiomns.exe" C:\Users\Admin\AppData\Local\Temp\sfzptila.k
3⤵
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1488

C:\Users\Admin\AppData\Local\Temp\fiomns.exe
"C:\Users\Admin\AppData\Local\Temp\fiomns.exe"
4⤵
- Executes dropped EXE
PID:1832

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\fiomns.exe
Filesize
79KB

MD5
38439b052a6d88388b3b1f0488125415

SHA1
b85ac7eaf1b1e7f2a60a0ba81f8517e4fd5f5b77

SHA256
9aae0d4712fbe49fa510a9fc6005e6d089f6c6c81e7b3f8b7c142a8b9c374011

SHA512
885433f1522f21329661cb93d25e79c134146bf6669b5ce6cbe8ec40d5c75a3bcabb855a456c357d577ce63ff66e7ed22caabcae88da5dee48a16110d06a954a

Download Submit
C:\Users\Admin\AppData\Local\Temp\fiomns.exe
Filesize
79KB

MD5
38439b052a6d88388b3b1f0488125415

SHA1
b85ac7eaf1b1e7f2a60a0ba81f8517e4fd5f5b77

SHA256
9aae0d4712fbe49fa510a9fc6005e6d089f6c6c81e7b3f8b7c142a8b9c374011

SHA512
885433f1522f21329661cb93d25e79c134146bf6669b5ce6cbe8ec40d5c75a3bcabb855a456c357d577ce63ff66e7ed22caabcae88da5dee48a16110d06a954a

Download Submit
C:\Users\Admin\AppData\Local\Temp\fiomns.exe
Filesize
79KB

MD5
38439b052a6d88388b3b1f0488125415

SHA1
b85ac7eaf1b1e7f2a60a0ba81f8517e4fd5f5b77

SHA256
9aae0d4712fbe49fa510a9fc6005e6d089f6c6c81e7b3f8b7c142a8b9c374011

SHA512
885433f1522f21329661cb93d25e79c134146bf6669b5ce6cbe8ec40d5c75a3bcabb855a456c357d577ce63ff66e7ed22caabcae88da5dee48a16110d06a954a

Download Submit
C:\Users\Admin\AppData\Local\Temp\muwrlvoxh.i
Filesize
86KB

MD5
75cb1145b5c982d69117a652be2fba74

SHA1
337872e05566140584ef7a18d9117e30d82d8210

SHA256
b8b087db90792d4e1c24abeb4fff4641b850605f20d5886311efc052ceee1a2b

SHA512
889d95db94f0c5ca2381e53ccc2ad2aa8819e60201469ffa9dbb479eaa9e041d5da55a7746f54ef2f8cd73896dd7635bdf2acd772ba2205f4e3dc06c05a8bbc8

Download Submit
C:\Users\Admin\AppData\Local\Temp\sfzptila.k
Filesize
7KB

MD5
787a0d646c90be5bdfb7d5d1d995b2ab

SHA1
eadf98a286e77264b367be608294fe7a1d12495d

SHA256
c9b542f94efcb6e178f5ec2a296a5e38c7ae537258564f7ca9a99887b5604625

SHA512
ec14069aac96b4fcde4c6be9f0dfe1b5c0a64eb27fa2e7f57e2d4694a2738b8c93fdc8a436a812813b7156b967f393f260db63f1da6390200252838dd73c8449

Download Submit
C:\Users\Admin\AppData\Roaming\corrected the terms of payment.exe
Filesize
169KB

MD5
bce338955b526be6f1068b1f4683b784

SHA1
f0b7d34426c02a5e8dd32b64d74ad36412ec135d

SHA256
6862138d0d12b55f99890e3560a68e5afa342c04b03138d935346b90ac1a2f9f

SHA512
f94aaae0072cdcbd18ae1d29a23baae5ff0d91bc602a7433892bd186210fc04e1124996b869a0aaf24cbf25ddafece95ff54eda1be33adf1e55579ddb69d098b

Download Submit
C:\Users\Admin\AppData\Roaming\corrected the terms of payment.exe
Filesize
169KB

MD5
bce338955b526be6f1068b1f4683b784

SHA1
f0b7d34426c02a5e8dd32b64d74ad36412ec135d

SHA256
6862138d0d12b55f99890e3560a68e5afa342c04b03138d935346b90ac1a2f9f

SHA512
f94aaae0072cdcbd18ae1d29a23baae5ff0d91bc602a7433892bd186210fc04e1124996b869a0aaf24cbf25ddafece95ff54eda1be33adf1e55579ddb69d098b

Download Submit
\Users\Admin\AppData\Local\Temp\fiomns.exe
Filesize
79KB

MD5
38439b052a6d88388b3b1f0488125415

SHA1
b85ac7eaf1b1e7f2a60a0ba81f8517e4fd5f5b77

SHA256
9aae0d4712fbe49fa510a9fc6005e6d089f6c6c81e7b3f8b7c142a8b9c374011

SHA512
885433f1522f21329661cb93d25e79c134146bf6669b5ce6cbe8ec40d5c75a3bcabb855a456c357d577ce63ff66e7ed22caabcae88da5dee48a16110d06a954a

Download Submit
\Users\Admin\AppData\Local\Temp\fiomns.exe
Filesize
79KB

MD5
38439b052a6d88388b3b1f0488125415

SHA1
b85ac7eaf1b1e7f2a60a0ba81f8517e4fd5f5b77

SHA256
9aae0d4712fbe49fa510a9fc6005e6d089f6c6c81e7b3f8b7c142a8b9c374011

SHA512
885433f1522f21329661cb93d25e79c134146bf6669b5ce6cbe8ec40d5c75a3bcabb855a456c357d577ce63ff66e7ed22caabcae88da5dee48a16110d06a954a

Download Submit
memory/1488-60-0x0000000000000000-mapping.dmp

Download
memory/1524-57-0x0000000075521000-0x0000000075523000-memory.dmp

Filesize
8KB

Download
memory/1524-55-0x0000000000000000-mapping.dmp

Download
memory/1832-67-0x0000000000424E40-mapping.dmp

Download
memory/1832-70-0x0000000000330000-0x0000000000342000-memory.dmp

Filesize
72KB

Download
memory/1832-71-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/1852-54-0x000007FEFBA81000-0x000007FEFBA83000-memory.dmp

Filesize
8KB

Download