asyncrat | 2dd40beb048efe94f7a62ac83f95a5da2815e05a248ef970dff3f20a4eb8f609

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
06/12/2024, 15:00

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General

Target

2dd40beb048efe94f7a62ac83f95a5da2815e05a248ef970dff3f20a4eb8f609.exe
Size

681KB
MD5

00e1431f15d4e7d7521adaf56d1cf9eb
SHA1

63c4a9d2327a46296e4d54c9baeb20f683ec9d87
SHA256

2dd40beb048efe94f7a62ac83f95a5da2815e05a248ef970dff3f20a4eb8f609
SHA512

c0e78ad73ffa3f4c0ab94ce0e21dd3cb0638cdbccbe5b3bcd0d841193a11fbd3485c176b010c3196b21d940dfa5b18f09f53e3dfdd28c5ba881df1637584118d
SSDEEP

12288:Cp1zzClVwk1lf0PmOPRQBsoNiDgOIu9diWKg0p2/DqJg7:Cpx8VwkiWaUOIuXZ

Score

10^/10

asyncrat redline 3333----japanese----3333 japanporn defense_evasion discovery infostealer rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

3333----Japanese----3333

Mutex

Aakn1515knAakn1515kn!

Attributes

delay
3
install
false
install_folder
%AppData%
pastebin_config
https://pastebin.com/raw/uqaaCRiU

aes.plain

Extracted

Family

redline

Botnet

JAPANPORN

45.134.225.35:7821

Attributes

auth_value
18d8418fe71c08942d2ddd0435edb9e5

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat
Asyncrat family
asyncrat
RedLine
RedLine Stealer is a malware family written in C#, first appearing in early 2020.
infostealer redline

RedLine payload 2 IoCs

resource	yara_rule
behavioral2/files/0x0009000000023c11-1649.dat	family_redline
behavioral2/memory/4848-1652-0x00000000006A0000-0x00000000006C0000-memory.dmp	family_redline

Redline family
redline

System Binary Proxy Execution: Regsvcs/Regasm 1 TTPs 2 IoCs

Abuse Regasm to proxy execution of malicious code.

defense_evasion

Regsvcs/Regasm

T1218.009

description	ioc	Process
File created	C:\Users\Admin\AppData\Local\Temp\RegAsm.exe	2dd40beb048efe94f7a62ac83f95a5da2815e05a248ef970dff3f20a4eb8f609.exe
Key opened	\Registry\Machine\Software\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Custom\RegAsm.exe	2dd40beb048efe94f7a62ac83f95a5da2815e05a248ef970dff3f20a4eb8f609.exe

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	WScript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	2dd40beb048efe94f7a62ac83f95a5da2815e05a248ef970dff3f20a4eb8f609.exe

Deletes itself 1 IoCs

pid	Process
3360	powershell.exe

Executes dropped EXE 2 IoCs

pid	Process
2720	RegAsm.exe
4848	Yljfderdjwutqbwifekmjhjapanred.exe

Indicator Removal: File Deletion 1 TTPs
Adversaries may delete files left behind by the actions of their intrusion activity.
defense_evasion

File Deletion
T1070.004

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
18	pastebin.com
19	pastebin.com

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4912 set thread context of 2720	4912	2dd40beb048efe94f7a62ac83f95a5da2815e05a248ef970dff3f20a4eb8f609.exe	89

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2dd40beb048efe94f7a62ac83f95a5da2815e05a248ef970dff3f20a4eb8f609.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WScript.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Yljfderdjwutqbwifekmjhjapanred.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000_Classes\Local Settings	2dd40beb048efe94f7a62ac83f95a5da2815e05a248ef970dff3f20a4eb8f609.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4912	2dd40beb048efe94f7a62ac83f95a5da2815e05a248ef970dff3f20a4eb8f609.exe
4912	2dd40beb048efe94f7a62ac83f95a5da2815e05a248ef970dff3f20a4eb8f609.exe
3360	powershell.exe
3360	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4912	2dd40beb048efe94f7a62ac83f95a5da2815e05a248ef970dff3f20a4eb8f609.exe
Token: SeDebugPrivilege	3360	powershell.exe
Token: SeDebugPrivilege	2720	RegAsm.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 4912 wrote to memory of 808	4912	2dd40beb048efe94f7a62ac83f95a5da2815e05a248ef970dff3f20a4eb8f609.exe	86
PID 4912 wrote to memory of 808	4912	2dd40beb048efe94f7a62ac83f95a5da2815e05a248ef970dff3f20a4eb8f609.exe	86
PID 4912 wrote to memory of 808	4912	2dd40beb048efe94f7a62ac83f95a5da2815e05a248ef970dff3f20a4eb8f609.exe	86
PID 4912 wrote to memory of 3360	4912	2dd40beb048efe94f7a62ac83f95a5da2815e05a248ef970dff3f20a4eb8f609.exe	87
PID 4912 wrote to memory of 3360	4912	2dd40beb048efe94f7a62ac83f95a5da2815e05a248ef970dff3f20a4eb8f609.exe	87
PID 4912 wrote to memory of 3360	4912	2dd40beb048efe94f7a62ac83f95a5da2815e05a248ef970dff3f20a4eb8f609.exe	87
PID 4912 wrote to memory of 2720	4912	2dd40beb048efe94f7a62ac83f95a5da2815e05a248ef970dff3f20a4eb8f609.exe	89
PID 4912 wrote to memory of 2720	4912	2dd40beb048efe94f7a62ac83f95a5da2815e05a248ef970dff3f20a4eb8f609.exe	89
PID 4912 wrote to memory of 2720	4912	2dd40beb048efe94f7a62ac83f95a5da2815e05a248ef970dff3f20a4eb8f609.exe	89
PID 4912 wrote to memory of 2720	4912	2dd40beb048efe94f7a62ac83f95a5da2815e05a248ef970dff3f20a4eb8f609.exe	89
PID 4912 wrote to memory of 2720	4912	2dd40beb048efe94f7a62ac83f95a5da2815e05a248ef970dff3f20a4eb8f609.exe	89
PID 4912 wrote to memory of 2720	4912	2dd40beb048efe94f7a62ac83f95a5da2815e05a248ef970dff3f20a4eb8f609.exe	89
PID 4912 wrote to memory of 2720	4912	2dd40beb048efe94f7a62ac83f95a5da2815e05a248ef970dff3f20a4eb8f609.exe	89
PID 4912 wrote to memory of 2720	4912	2dd40beb048efe94f7a62ac83f95a5da2815e05a248ef970dff3f20a4eb8f609.exe	89
PID 808 wrote to memory of 4848	808	WScript.exe	90
PID 808 wrote to memory of 4848	808	WScript.exe	90
PID 808 wrote to memory of 4848	808	WScript.exe	90

C:\Users\Admin\AppData\Local\Temp\2dd40beb048efe94f7a62ac83f95a5da2815e05a248ef970dff3f20a4eb8f609.exe
"C:\Users\Admin\AppData\Local\Temp\2dd40beb048efe94f7a62ac83f95a5da2815e05a248ef970dff3f20a4eb8f609.exe"
1⤵
- System Binary Proxy Execution: Regsvcs/Regasm
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4912
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\Nomzctbtacmztkfxofvv.vbs"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:808
- - C:\Users\Admin\AppData\Local\Temp\Yljfderdjwutqbwifekmjhjapanred.exe
    "C:\Users\Admin\AppData\Local\Temp\Yljfderdjwutqbwifekmjhjapanred.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4848
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Start-Sleep -s 5; Remove-Item -Path "C:\Users\Admin\AppData\Local\Temp\2dd40beb048efe94f7a62ac83f95a5da2815e05a248ef970dff3f20a4eb8f609.exe" -Force
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3360
- C:\Users\Admin\AppData\Local\Temp\RegAsm.exe
  C:\Users\Admin\AppData\Local\Temp\RegAsm.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:2720

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Indicator Removal

T1070

File Deletion

T1070.004

System Binary Proxy Execution

T1218

Regsvcs/Regasm

T1218.009

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\Nomzctbtacmztkfxofvv.vbs

Filesize
118B

MD5
c79baba091f7498ce4d61f075f88a4b7

SHA1
9906c4bf1e3365c38833c89cd9b1b50c3ccb64a3

SHA256
63d3754108ef87e215e9d68095b97d8c62468496fb7348cf0d4c76892bda2bad

SHA512
9f571c9211e5f1de1edf22c1ee5bfec5d90e7bc705c3963adbc8db20d56ee2a06b410318c2d61017dae49c4af20e4b53318561e265fa64406b50ef6f291bec18

Download Submit
C:\Users\Admin\AppData\Local\Temp\RegAsm.exe

Filesize
63KB

MD5
0d5df43af2916f47d00c1573797c1a13

SHA1
230ab5559e806574d26b4c20847c368ed55483b0

SHA256
c066aee7aa3aa83f763ebc5541daa266ed6c648fbffcde0d836a13b221bb2adc

SHA512
f96cf9e1890746b12daf839a6d0f16f062b72c1b8a40439f96583f242980f10f867720232a6fa0f7d4d7ac0a7a6143981a5a130d6417ea98b181447134c7cfe2

Download Submit
C:\Users\Admin\AppData\Local\Temp\Yljfderdjwutqbwifekmjhjapanred.exe

Filesize
104KB

MD5
0eef332fd798b03319283bd2b10787a2

SHA1
14e4177525f12e20b00c21a05ba711057fb233da

SHA256
a54a8b8a85445de206467249b33785a9c1d33828b1eb57e3531d01ad7488e1b3

SHA512
fd205aaa4f94df3ec9d3699deb3384f9f51a28ef098cb0e89945ee5b188df6ba7c05b13ecda9c80cd8fddffb664a60f3bd41e566d4d48e2445469e9120c94994

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_3j0pr0wj.eo0.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2720-1678-0x00000000753E0000-0x0000000075B90000-memory.dmp

Filesize
7.7MB

Download
memory/2720-1647-0x00000000753E0000-0x0000000075B90000-memory.dmp

Filesize
7.7MB

Download
memory/2720-1646-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/3360-1673-0x0000000006450000-0x000000000646A000-memory.dmp

Filesize
104KB

Download
memory/3360-1670-0x00000000059C0000-0x0000000005D14000-memory.dmp

Filesize
3.3MB

Download
memory/3360-1660-0x0000000005100000-0x0000000005166000-memory.dmp

Filesize
408KB

Download
memory/3360-1671-0x0000000005F20000-0x0000000005F3E000-memory.dmp

Filesize
120KB

Download
memory/3360-1672-0x00000000075A0000-0x0000000007C1A000-memory.dmp

Filesize
6.5MB

Download
memory/3360-1657-0x0000000004E90000-0x0000000004EB2000-memory.dmp

Filesize
136KB

Download
memory/3360-1651-0x0000000002630000-0x0000000002666000-memory.dmp

Filesize
216KB

Download
memory/3360-1654-0x00000000051B0000-0x00000000057D8000-memory.dmp

Filesize
6.2MB

Download
memory/3360-1674-0x00000000071C0000-0x0000000007256000-memory.dmp

Filesize
600KB

Download
memory/3360-1675-0x0000000006510000-0x0000000006532000-memory.dmp

Filesize
136KB

Download
memory/4848-1659-0x0000000004FC0000-0x000000000500C000-memory.dmp

Filesize
304KB

Download
memory/4848-1652-0x00000000006A0000-0x00000000006C0000-memory.dmp

Filesize
128KB

Download
memory/4848-1653-0x00000000054B0000-0x0000000005AC8000-memory.dmp

Filesize
6.1MB

Download
memory/4848-1655-0x0000000004F20000-0x0000000004F32000-memory.dmp

Filesize
72KB

Download
memory/4848-1656-0x0000000005050000-0x000000000515A000-memory.dmp

Filesize
1.0MB

Download
memory/4848-1658-0x0000000004F80000-0x0000000004FBC000-memory.dmp

Filesize
240KB

Download
memory/4912-34-0x0000000004DB0000-0x0000000004E2E000-memory.dmp

Filesize
504KB

Download
memory/4912-1648-0x00000000753E0000-0x0000000075B90000-memory.dmp

Filesize
7.7MB

Download
memory/4912-12-0x0000000004DB0000-0x0000000004E2E000-memory.dmp

Filesize
504KB

Download
memory/4912-10-0x0000000004DB0000-0x0000000004E2E000-memory.dmp

Filesize
504KB

Download
memory/4912-8-0x0000000004DB0000-0x0000000004E2E000-memory.dmp

Filesize
504KB

Download
memory/4912-6-0x0000000004DB0000-0x0000000004E2E000-memory.dmp

Filesize
504KB

Download
memory/4912-4-0x0000000004DB0000-0x0000000004E2E000-memory.dmp

Filesize
504KB

Download
memory/4912-60-0x0000000004DB0000-0x0000000004E2E000-memory.dmp

Filesize
504KB

Download
memory/4912-46-0x0000000004DB0000-0x0000000004E2E000-memory.dmp

Filesize
504KB

Download
memory/4912-38-0x0000000004DB0000-0x0000000004E2E000-memory.dmp

Filesize
504KB

Download
memory/4912-27-0x0000000004DB0000-0x0000000004E2E000-memory.dmp

Filesize
504KB

Download
memory/4912-22-0x0000000004DB0000-0x0000000004E2E000-memory.dmp

Filesize
504KB

Download
memory/4912-3-0x0000000004DB0000-0x0000000004E2E000-memory.dmp

Filesize
504KB

Download
memory/4912-1630-0x00000000753E0000-0x0000000075B90000-memory.dmp

Filesize
7.7MB

Download
memory/4912-1629-0x0000000004F80000-0x0000000004FE6000-memory.dmp

Filesize
408KB

Download
memory/4912-1631-0x0000000005090000-0x0000000005122000-memory.dmp

Filesize
584KB

Download
memory/4912-1632-0x0000000005AD0000-0x0000000006074000-memory.dmp

Filesize
5.6MB

Download
memory/4912-16-0x0000000004DB0000-0x0000000004E2E000-memory.dmp

Filesize
504KB

Download
memory/4912-1640-0x0000000005270000-0x0000000005288000-memory.dmp

Filesize
96KB

Download
memory/4912-18-0x0000000004DB0000-0x0000000004E2E000-memory.dmp

Filesize
504KB

Download
memory/4912-20-0x0000000004DB0000-0x0000000004E2E000-memory.dmp

Filesize
504KB

Download
memory/4912-14-0x0000000004DB0000-0x0000000004E2E000-memory.dmp

Filesize
504KB

Download
memory/4912-25-0x0000000004DB0000-0x0000000004E2E000-memory.dmp

Filesize
504KB

Download
memory/4912-28-0x0000000004DB0000-0x0000000004E2E000-memory.dmp

Filesize
504KB

Download
memory/4912-31-0x0000000004DB0000-0x0000000004E2E000-memory.dmp

Filesize
504KB

Download
memory/4912-32-0x0000000004DB0000-0x0000000004E2E000-memory.dmp

Filesize
504KB

Download
memory/4912-0-0x00000000753EE000-0x00000000753EF000-memory.dmp

Filesize
4KB

Download
memory/4912-36-0x0000000004DB0000-0x0000000004E2E000-memory.dmp

Filesize
504KB

Download
memory/4912-40-0x0000000004DB0000-0x0000000004E2E000-memory.dmp

Filesize
504KB

Download
memory/4912-42-0x0000000004DB0000-0x0000000004E2E000-memory.dmp

Filesize
504KB

Download
memory/4912-44-0x0000000004DB0000-0x0000000004E2E000-memory.dmp

Filesize
504KB

Download
memory/4912-48-0x0000000004DB0000-0x0000000004E2E000-memory.dmp

Filesize
504KB

Download
memory/4912-50-0x0000000004DB0000-0x0000000004E2E000-memory.dmp

Filesize
504KB

Download
memory/4912-52-0x0000000004DB0000-0x0000000004E2E000-memory.dmp

Filesize
504KB

Download
memory/4912-54-0x0000000004DB0000-0x0000000004E2E000-memory.dmp

Filesize
504KB

Download
memory/4912-56-0x0000000004DB0000-0x0000000004E2E000-memory.dmp

Filesize
504KB

Download
memory/4912-58-0x0000000004DB0000-0x0000000004E2E000-memory.dmp

Filesize
504KB

Download
memory/4912-62-0x0000000004DB0000-0x0000000004E2E000-memory.dmp

Filesize
504KB

Download
memory/4912-66-0x0000000004DB0000-0x0000000004E2E000-memory.dmp

Filesize
504KB

Download
memory/4912-64-0x0000000004DB0000-0x0000000004E2E000-memory.dmp

Filesize
504KB

Download
memory/4912-2-0x0000000004DB0000-0x0000000004E34000-memory.dmp

Filesize
528KB

Download
memory/4912-1-0x0000000000230000-0x00000000002E0000-memory.dmp

Filesize
704KB

Download