asyncrat | 2f05e23edec61e746e86cd46e79d6af02ec93705f755a1f9683e953cd9406890

Analysis

max time kernel
16s
max time network
19s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
26-12-2024 21:03

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General

Target

mexican.exe
Size

3.6MB
MD5

b9ce72d9fa47b960c5912662ba09b4c7
SHA1

5147cd82eff424a9ba48f64d873b7200d546bdb8
SHA256

2f05e23edec61e746e86cd46e79d6af02ec93705f755a1f9683e953cd9406890
SHA512

8a59922d3c8acbc2224e66444c1e852392f378f0d288747f848169e07b1f23bf86d6bba10831421f5c3e81d8c74b791bd306cce8f545eca52b0e397694587e7a
SSDEEP

98304:QkqXf0FlL9nrYAWAZi6sfLxkuahjCOeX9YG9see5GnRyCAm0makxH13U:QkSIlLtzWAXAkuujCPX9YG9he5GnQCAB

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Default

51.89.44.68:8848

Mutex

etb3t1tr5n

Attributes

delay
1
install
true
install_file
svchost.exe
install_folder
%Temp%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat
Asyncrat family
asyncrat

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral2/files/0x0008000000023c64-16.dat	family_asyncrat

Downloads MZ/PE file

Checks computer location settings 2 TTPs 1 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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	mexican.exe

Executes dropped EXE 2 IoCs

pid	Process
2168	svchost.exe
696	svchost.exe

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

Web Service

T1102

flow	ioc
6	raw.githubusercontent.com
7	raw.githubusercontent.com

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 43 IoCs

description	pid	Process
Token: SeDebugPrivilege	4564	mexican.exe
Token: SeIncreaseQuotaPrivilege	2168	svchost.exe
Token: SeSecurityPrivilege	2168	svchost.exe
Token: SeTakeOwnershipPrivilege	2168	svchost.exe
Token: SeLoadDriverPrivilege	2168	svchost.exe
Token: SeSystemProfilePrivilege	2168	svchost.exe
Token: SeSystemtimePrivilege	2168	svchost.exe
Token: SeProfSingleProcessPrivilege	2168	svchost.exe
Token: SeIncBasePriorityPrivilege	2168	svchost.exe
Token: SeCreatePagefilePrivilege	2168	svchost.exe
Token: SeBackupPrivilege	2168	svchost.exe
Token: SeRestorePrivilege	2168	svchost.exe
Token: SeShutdownPrivilege	2168	svchost.exe
Token: SeDebugPrivilege	2168	svchost.exe
Token: SeSystemEnvironmentPrivilege	2168	svchost.exe
Token: SeRemoteShutdownPrivilege	2168	svchost.exe
Token: SeUndockPrivilege	2168	svchost.exe
Token: SeManageVolumePrivilege	2168	svchost.exe
Token: 33	2168	svchost.exe
Token: 34	2168	svchost.exe
Token: 35	2168	svchost.exe
Token: 36	2168	svchost.exe
Token: SeIncreaseQuotaPrivilege	696	svchost.exe
Token: SeSecurityPrivilege	696	svchost.exe
Token: SeTakeOwnershipPrivilege	696	svchost.exe
Token: SeLoadDriverPrivilege	696	svchost.exe
Token: SeSystemProfilePrivilege	696	svchost.exe
Token: SeSystemtimePrivilege	696	svchost.exe
Token: SeProfSingleProcessPrivilege	696	svchost.exe
Token: SeIncBasePriorityPrivilege	696	svchost.exe
Token: SeCreatePagefilePrivilege	696	svchost.exe
Token: SeBackupPrivilege	696	svchost.exe
Token: SeRestorePrivilege	696	svchost.exe
Token: SeShutdownPrivilege	696	svchost.exe
Token: SeDebugPrivilege	696	svchost.exe
Token: SeSystemEnvironmentPrivilege	696	svchost.exe
Token: SeRemoteShutdownPrivilege	696	svchost.exe
Token: SeUndockPrivilege	696	svchost.exe
Token: SeManageVolumePrivilege	696	svchost.exe
Token: 33	696	svchost.exe
Token: 34	696	svchost.exe
Token: 35	696	svchost.exe
Token: 36	696	svchost.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4564 wrote to memory of 2168	4564	mexican.exe	84
PID 4564 wrote to memory of 2168	4564	mexican.exe	84
PID 4564 wrote to memory of 696	4564	mexican.exe	91
PID 4564 wrote to memory of 696	4564	mexican.exe	91

C:\Users\Admin\AppData\Local\Temp\mexican.exe
"C:\Users\Admin\AppData\Local\Temp\mexican.exe"
1⤵
- Checks computer location settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4564
- C:\Users\Admin\AppData\Roaming\svchost.exe
  "C:\Users\Admin\AppData\Roaming\svchost.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2168
- C:\Users\Admin\AppData\Roaming\svchost.exe
  "C:\Users\Admin\AppData\Roaming\svchost.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:696

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\Stealerium-Latest.log

Filesize
2KB

MD5
aa7b2102d46639b4606613e181691050

SHA1
26224d458d3296424fe216a74952a76314e757e5

SHA256
5bffcb32f9774b81f5b656dd385f2cd6d3b147aff8ea4e40f0957e311d76a9a9

SHA512
ab06f184a1489cb5d993685e105d92b4907234269184e0cf425f9138deaeae3403ad00099f992e61b304449c97e36fac04aa16fac098806437438f72fa07217d

Download Submit
C:\Users\Admin\AppData\Roaming\svchost.exe

Filesize
63KB

MD5
67ca41c73d556cc4cfc67fc5b425bbbd

SHA1
ada7f812cd581c493630eca83bf38c0f8b32b186

SHA256
23d2e491a8c7f2f7f344764e6879d9566c9a3e55a3788038e48b346c068dde5b

SHA512
0dceb6468147cd2497adf31843389a78460ed5abe2c5a13488fc55a2d202ee6ce0271821d3cf12bc1f09a4d6b79a737ea3bccfc2bb87f89b3fff6410fa85ec02

Download Submit
memory/2168-23-0x0000000000AA0000-0x0000000000AB6000-memory.dmp

Filesize
88KB

Download
memory/2168-24-0x00007FFAC2650000-0x00007FFAC3111000-memory.dmp

Filesize
10.8MB

Download
memory/2168-50-0x00007FFAC2650000-0x00007FFAC3111000-memory.dmp

Filesize
10.8MB

Download
memory/4564-0-0x00007FFAC2653000-0x00007FFAC2655000-memory.dmp

Filesize
8KB

Download
memory/4564-1-0x00000204C8D50000-0x00000204C90EA000-memory.dmp

Filesize
3.6MB

Download
memory/4564-2-0x00007FFAC2650000-0x00007FFAC3111000-memory.dmp

Filesize
10.8MB

Download
memory/4564-51-0x00007FFAC2653000-0x00007FFAC2655000-memory.dmp

Filesize
8KB

Download
memory/4564-52-0x00007FFAC2650000-0x00007FFAC3111000-memory.dmp

Filesize
10.8MB

Download