asyncrat | 1c9f4869c446e6e1e3c562631b1a10210294a7dd1367b4a58450b1a949e873e9

General

Target

vfdjo.exe
Size

35KB
MD5

a03f28f2c0bf87d438a28e815d4b458a
SHA1

60627893ce5e918c9b3dbe146f1b577f630129b5
SHA256

1c9f4869c446e6e1e3c562631b1a10210294a7dd1367b4a58450b1a949e873e9
SHA512

7ee6455f78cca337042521d024cdd4a54903e0b2276588b400fc9043354df28ca9cf0c9244028656c2e5e44e9f4889288aaa72e6d4ddb101380fb24d95727738
SSDEEP

768:deBwuYH/uhx4yQF1F5e2nTesOhCZC3JtdkrDNxHloAnOT+k0uvN:dwwV2IfjeOOhCkmBlS+knN

Score

10^/10

asyncrat stormkitty venomrat discovery rat stealer

Malware Config

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat
Asyncrat family
asyncrat
StormKitty
StormKitty is an open source info stealer written in C#.
stealer stormkitty

StormKitty payload 5 IoCs

resource	yara_rule
behavioral1/memory/2824-26-0x0000000000400000-0x0000000000704000-memory.dmp	family_stormkitty
behavioral1/memory/2824-24-0x0000000000400000-0x0000000000704000-memory.dmp	family_stormkitty
behavioral1/memory/2824-30-0x0000000000400000-0x0000000000704000-memory.dmp	family_stormkitty
behavioral1/memory/2824-22-0x0000000000400000-0x0000000000704000-memory.dmp	family_stormkitty
behavioral1/memory/2824-21-0x0000000000400000-0x0000000000704000-memory.dmp	family_stormkitty

Stormkitty family
stormkitty

VenomRAT 5 IoCs

Detects VenomRAT.

rat

resource	yara_rule
behavioral1/memory/2824-26-0x0000000000400000-0x0000000000704000-memory.dmp	VenomRAT
behavioral1/memory/2824-24-0x0000000000400000-0x0000000000704000-memory.dmp	VenomRAT
behavioral1/memory/2824-30-0x0000000000400000-0x0000000000704000-memory.dmp	VenomRAT
behavioral1/memory/2824-22-0x0000000000400000-0x0000000000704000-memory.dmp	VenomRAT
behavioral1/memory/2824-21-0x0000000000400000-0x0000000000704000-memory.dmp	VenomRAT

Venomrat family
venomrat
Downloads MZ/PE file
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2432 set thread context of 2824	2432	vfdjo.exe	34

System Location Discovery: System Language Discovery 1 TTPs 4 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	vfdjo.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cvtres.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 35 IoCs

pid	Process
2824	RegAsm.exe
2824	RegAsm.exe
2824	RegAsm.exe
2824	RegAsm.exe
2824	RegAsm.exe
2824	RegAsm.exe
2824	RegAsm.exe
2824	RegAsm.exe
2824	RegAsm.exe
2824	RegAsm.exe
2824	RegAsm.exe
2824	RegAsm.exe
2824	RegAsm.exe
2824	RegAsm.exe
2824	RegAsm.exe
2824	RegAsm.exe
2824	RegAsm.exe
2824	RegAsm.exe
2824	RegAsm.exe
2824	RegAsm.exe
2824	RegAsm.exe
2824	RegAsm.exe
2824	RegAsm.exe
2824	RegAsm.exe
2824	RegAsm.exe
2824	RegAsm.exe
2824	RegAsm.exe
2824	RegAsm.exe
2824	RegAsm.exe
2824	RegAsm.exe
2824	RegAsm.exe
2824	RegAsm.exe
2824	RegAsm.exe
2824	RegAsm.exe
2824	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2432	vfdjo.exe
Token: SeDebugPrivilege	2824	RegAsm.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2824	RegAsm.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2432 wrote to memory of 1616	2432	vfdjo.exe	30
PID 2432 wrote to memory of 1616	2432	vfdjo.exe	30
PID 2432 wrote to memory of 1616	2432	vfdjo.exe	30
PID 2432 wrote to memory of 1616	2432	vfdjo.exe	30
PID 1616 wrote to memory of 2548	1616	csc.exe	33
PID 1616 wrote to memory of 2548	1616	csc.exe	33
PID 1616 wrote to memory of 2548	1616	csc.exe	33
PID 1616 wrote to memory of 2548	1616	csc.exe	33
PID 2432 wrote to memory of 2824	2432	vfdjo.exe	34
PID 2432 wrote to memory of 2824	2432	vfdjo.exe	34
PID 2432 wrote to memory of 2824	2432	vfdjo.exe	34
PID 2432 wrote to memory of 2824	2432	vfdjo.exe	34
PID 2432 wrote to memory of 2824	2432	vfdjo.exe	34
PID 2432 wrote to memory of 2824	2432	vfdjo.exe	34
PID 2432 wrote to memory of 2824	2432	vfdjo.exe	34
PID 2432 wrote to memory of 2824	2432	vfdjo.exe	34
PID 2432 wrote to memory of 2824	2432	vfdjo.exe	34
PID 2432 wrote to memory of 2824	2432	vfdjo.exe	34
PID 2432 wrote to memory of 2824	2432	vfdjo.exe	34
PID 2432 wrote to memory of 2824	2432	vfdjo.exe	34

C:\Users\Admin\AppData\Local\Temp\vfdjo.exe
"C:\Users\Admin\AppData\Local\Temp\vfdjo.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2432
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\jd1zwcbr\jd1zwcbr.cmdline"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1616
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RESCF8F.tmp" "c:\Users\Admin\AppData\Local\Temp\jd1zwcbr\CSCECEAB6355844C0E8AD0F23C848A5736.TMP"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2548
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:2824

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\RESCF8F.tmp

Filesize
1KB

MD5
9775cdb63449686e8c19f616e2ee6504

SHA1
80a1ac6033105a5eae14043f4fa2a6e38a14e1f6

SHA256
b7240594a5e71d4dc24f08a56e2d3c54c0c8b6343fd422f34da1a9ac4b9e1397

SHA512
8e235536a121bda241a09944cc47e6fc92f748dd408b1dc5d604dfa992bf573d1ccfd694650ce2e1415193e6f73e282d99e1b9d6b8c4a789acf3d183524af888

Download Submit
C:\Users\Admin\AppData\Local\Temp\TarFC3F.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
C:\Users\Admin\AppData\Local\Temp\jd1zwcbr\jd1zwcbr.dll

Filesize
9KB

MD5
b16c867a41cd0890cfee30323cae91c5

SHA1
f167a47e18485f5fc0dd0a42f4786a0f1bc901b0

SHA256
07eaedc075e0d93b2a2272e6ddecac18948ac0deb55f3deea2d3aad54005a5b1

SHA512
015a29f880c8725add9a282b3b5eaebcfde50b5b3a4630b8cd09f47291cc32eec6ef75236d8ef52b69335b5e78d2322d84ffcb1dd340f2d61ccb7548d9f29c06

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\jd1zwcbr\CSCECEAB6355844C0E8AD0F23C848A5736.TMP

Filesize
652B

MD5
a4e065f9193375e7d9467e3975808d13

SHA1
9ec872008ddf2b605b039e52f3f168284ab07418

SHA256
fd18e2a865c7dc6a2ad68d0c2c61a0cecb96fbf971a819ff533766c9b8ad79f8

SHA512
304108f983e94e4134dfdeaee9dc947be63b43d5d1abd238a172446c070c371b3b6637d8d43df44b38ab2b09f2f2330dc50218a9f31446e0caef673e7a6a5509

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\jd1zwcbr\jd1zwcbr.0.cs

Filesize
10KB

MD5
b5c3a2d03ff4c721192716f326c77dea

SHA1
6b754fd988ca58865674b711aba76d3c6b2c5693

SHA256
ab42fe5fd08cb87663e130f99f96124fdd37d825d081b9712b0bad8b6f270fac

SHA512
d32e5a98c12b6b85d1913555ea54f837cd0fc647ca945aef9d75ffade06506be1f4a2348827f11c4eeae0796e4156c8f352e3c0f9a6e2cdc93cb501bcdf2c248

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\jd1zwcbr\jd1zwcbr.cmdline

Filesize
204B

MD5
35d3243453b34d18fc39a5198b39d500

SHA1
3619d3ed33d1fe12d0d6f867fcd45e0cb1c8b475

SHA256
aa582c97df9fd76efc676a3c6d63974fd2702d7fabc96f30cdbfcdc32cc97079

SHA512
ef4bda89b3dbc0e53a3e89c22fead889c699121b82e6d8614cdf296a3bcab6b3aa44a9df78d613713d15d8b6a8b3522aac85225cdb50a7e125fdc44dfcfb265e

Download Submit
memory/2432-1-0x0000000000390000-0x00000000003A0000-memory.dmp

Filesize
64KB

Download
memory/2432-4-0x0000000074360000-0x0000000074A4E000-memory.dmp

Filesize
6.9MB

Download
memory/2432-15-0x0000000000400000-0x0000000000408000-memory.dmp

Filesize
32KB

Download
memory/2432-0-0x000000007436E000-0x000000007436F000-memory.dmp

Filesize
4KB

Download
memory/2432-29-0x0000000074360000-0x0000000074A4E000-memory.dmp

Filesize
6.9MB

Download
memory/2824-24-0x0000000000400000-0x0000000000704000-memory.dmp

Filesize
3.0MB

Download
memory/2824-30-0x0000000000400000-0x0000000000704000-memory.dmp

Filesize
3.0MB

Download
memory/2824-22-0x0000000000400000-0x0000000000704000-memory.dmp

Filesize
3.0MB

Download
memory/2824-21-0x0000000000400000-0x0000000000704000-memory.dmp

Filesize
3.0MB

Download
memory/2824-17-0x0000000000400000-0x0000000000704000-memory.dmp

Filesize
3.0MB

Download
memory/2824-19-0x0000000000400000-0x0000000000704000-memory.dmp

Filesize
3.0MB

Download
memory/2824-23-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2824-26-0x0000000000400000-0x0000000000704000-memory.dmp

Filesize
3.0MB

Download

Analysis

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