asyncrat | 66d481bf2dca013520492ea209434c3f9fbb44efb9f764752a8258ccaf0708ab

Analysis

max time kernel
147s
max time network
154s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
26-07-2024 15:16

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General

Target

Build1.exe
Size

138KB
MD5

fb83432d034c44a1202532e5400d535c
SHA1

6ddff5ca2cb58b2d108811cbb1a78d56c14b9fe8
SHA256

66d481bf2dca013520492ea209434c3f9fbb44efb9f764752a8258ccaf0708ab
SHA512

119486fa615cf484d867da39e588adf883ab38dd617d8f09a85f255f0c54455a5b9c73966187521019180445a0d0840a2a4a646e0048f257a67ab53afc267329
SSDEEP

3072:I7Nx8SxLRNMX/VMCZL0f6AXVll3U/+1h8wpAy7:IjLRQGaojl6/+1hHpA

Score

10^/10

asyncrat rat

Malware Config

Signatures

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

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral1/files/0x000d000000016d07-5.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2252	Frendo.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2252	Frendo.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2356 wrote to memory of 2252	2356	Build1.exe	30
PID 2356 wrote to memory of 2252	2356	Build1.exe	30
PID 2356 wrote to memory of 2252	2356	Build1.exe	30

C:\Users\Admin\AppData\Local\Temp\Build1.exe
"C:\Users\Admin\AppData\Local\Temp\Build1.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2356
- C:\Users\Admin\AppData\Local\Temp\Frendo.exe
  "C:\Users\Admin\AppData\Local\Temp\Frendo.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2252

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Cab3C18.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

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

Filesize
114KB

MD5
4d9bed090024a47510e231dfd690863f

SHA1
a3ed33f387f880edd37964ebfd8d152259c345e6

SHA256
1e84b3659b51b2056812d9c1bb3c169689da3adb50a1dfaec30b85392a791b57

SHA512
aeebb7c5177a41351ecc74a5b5c6fc07c32bc2b9ca11eef540556b231488d8da5a043e17398a263461aead3d29d1d982f048df9eaf2c4f3cde9d9893e81b2f2d

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar5B7E.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
memory/2252-7-0x0000000000EF0000-0x0000000000F12000-memory.dmp

Filesize
136KB

Download
memory/2252-8-0x000007FEF56D0000-0x000007FEF60BC000-memory.dmp

Filesize
9.9MB

Download
memory/2252-9-0x000007FEF56D0000-0x000007FEF60BC000-memory.dmp

Filesize
9.9MB

Download
memory/2252-62-0x000007FEF56D0000-0x000007FEF60BC000-memory.dmp

Filesize
9.9MB

Download
memory/2356-0-0x000007FEF56D3000-0x000007FEF56D4000-memory.dmp

Filesize
4KB

Download
memory/2356-1-0x0000000000E10000-0x0000000000E38000-memory.dmp

Filesize
160KB

Download