asyncrat | ebf1f88870aadeb5f22a893b6670c6ac9aaccef37dad26317e000146e3cc8a41

Analysis

max time kernel
11s
platform
windows11-21h2_x64
resource
win11-20240802-en
resource tags

arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
submitted
04/09/2024, 22:23

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General

Target

Rebel/RebelCracked.exe
Size

154KB
MD5

76b3ef39824d31fde7ca5d27ae8700fa
SHA1

c03994080a4f1038d4a624499acedcf0fea737f3
SHA256

439096c4077b5a1ad2e2ad232fdaeeece05a72e6a69c16d11a624b665dc428f3
SHA512

3246594017abe3c4e208ce270388feecf23ec3032de73bb380aaebd17030263ff00e8270b2ab901efa993c2e896cd28a091b2b9a49986c98cd974826641f240d
SSDEEP

3072:0OovaAxpeK2dWUi60uu0JpZmTKv03lqUmPT01oSVeT5iu9d7:0OcpeK8lucpUCKlqUP/M

Score

10^/10

asyncrat stormkitty default credential_access discovery rat spyware stealer

Malware Config

Extracted

Family

asyncrat

Botnet

Default

127.0.0.1:6606

127.0.0.1:7707

127.0.0.1:8808

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
3
install
false
install_folder
%AppData%

aes.plain

Signatures

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

StormKitty payload 2 IoCs

resource	yara_rule
behavioral4/files/0x000200000002a06a-7.dat	family_stormkitty
behavioral4/memory/400-19-0x0000000000080000-0x00000000000B2000-memory.dmp	family_stormkitty

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral4/files/0x000200000002a06a-7.dat	family_asyncrat

Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

Executes dropped EXE 4 IoCs

pid	Process
400	RuntimeBroker.exe
1588	RuntimeBroker.exe
4188	RuntimeBroker.exe
364	RuntimeBroker.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Drops desktop.ini file(s) 7 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Local\0d7fe3d5ec71cd87af3831504aa17ab5\Admin@NDKRNPGL_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Camera Roll\desktop.ini	RuntimeBroker.exe
File created	C:\Users\Admin\AppData\Local\0d7fe3d5ec71cd87af3831504aa17ab5\Admin@NDKRNPGL_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Saved Pictures\desktop.ini	RuntimeBroker.exe
File created	C:\Users\Admin\AppData\Local\0d7fe3d5ec71cd87af3831504aa17ab5\Admin@NDKRNPGL_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	RuntimeBroker.exe
File created	C:\Users\Admin\AppData\Local\0d7fe3d5ec71cd87af3831504aa17ab5\Admin@NDKRNPGL_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	RuntimeBroker.exe
File created	C:\Users\Admin\AppData\Local\0d7fe3d5ec71cd87af3831504aa17ab5\Admin@NDKRNPGL_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	RuntimeBroker.exe
File opened for modification	C:\Users\Admin\AppData\Local\0d7fe3d5ec71cd87af3831504aa17ab5\Admin@NDKRNPGL_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	RuntimeBroker.exe
File created	C:\Users\Admin\AppData\Local\0d7fe3d5ec71cd87af3831504aa17ab5\Admin@NDKRNPGL_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	RuntimeBroker.exe

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217
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 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	RuntimeBroker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RuntimeBroker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RuntimeBroker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RuntimeBroker.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
400	RuntimeBroker.exe
400	RuntimeBroker.exe
400	RuntimeBroker.exe
400	RuntimeBroker.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	400	RuntimeBroker.exe
Token: SeDebugPrivilege	1588	RuntimeBroker.exe
Token: SeDebugPrivilege	4188	RuntimeBroker.exe
Token: SeDebugPrivilege	364	RuntimeBroker.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 1036 wrote to memory of 1280	1036	RebelCracked.exe	81
PID 1036 wrote to memory of 1280	1036	RebelCracked.exe	81
PID 1036 wrote to memory of 400	1036	RebelCracked.exe	82
PID 1036 wrote to memory of 400	1036	RebelCracked.exe	82
PID 1036 wrote to memory of 400	1036	RebelCracked.exe	82
PID 1280 wrote to memory of 1576	1280	RebelCracked.exe	83
PID 1280 wrote to memory of 1576	1280	RebelCracked.exe	83
PID 1280 wrote to memory of 1588	1280	RebelCracked.exe	84
PID 1280 wrote to memory of 1588	1280	RebelCracked.exe	84
PID 1280 wrote to memory of 1588	1280	RebelCracked.exe	84
PID 1576 wrote to memory of 4980	1576	RebelCracked.exe	85
PID 1576 wrote to memory of 4980	1576	RebelCracked.exe	85
PID 1576 wrote to memory of 4188	1576	RebelCracked.exe	86
PID 1576 wrote to memory of 4188	1576	RebelCracked.exe	86
PID 1576 wrote to memory of 4188	1576	RebelCracked.exe	86
PID 4980 wrote to memory of 2228	4980	RebelCracked.exe	88
PID 4980 wrote to memory of 2228	4980	RebelCracked.exe	88
PID 4980 wrote to memory of 364	4980	RebelCracked.exe	89
PID 4980 wrote to memory of 364	4980	RebelCracked.exe	89
PID 4980 wrote to memory of 364	4980	RebelCracked.exe	89

C:\Users\Admin\AppData\Local\Temp\Rebel\RebelCracked.exe
"C:\Users\Admin\AppData\Local\Temp\Rebel\RebelCracked.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1036
- C:\Users\Admin\AppData\Local\Temp\Rebel\RebelCracked.exe
  "C:\Users\Admin\AppData\Local\Temp\Rebel\RebelCracked.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1280
- - C:\Users\Admin\AppData\Local\Temp\Rebel\RebelCracked.exe
    "C:\Users\Admin\AppData\Local\Temp\Rebel\RebelCracked.exe"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1576
  - - C:\Users\Admin\AppData\Local\Temp\Rebel\RebelCracked.exe
      "C:\Users\Admin\AppData\Local\Temp\Rebel\RebelCracked.exe"
      4⤵
      Suspicious use of WriteProcessMemory
      PID:4980
    - - C:\Users\Admin\AppData\Local\Temp\Rebel\RebelCracked.exe
        
        "C:\Users\Admin\AppData\Local\Temp\Rebel\RebelCracked.exe"
        5⤵
        
        PID:2228
      - C:\Users\Admin\AppData\Local\Temp\Rebel\RebelCracked.exe
        
        "C:\Users\Admin\AppData\Local\Temp\Rebel\RebelCracked.exe"
        6⤵
        
        PID:548
        
        C:\Users\Admin\AppData\Local\Temp\Rebel\RebelCracked.exe
        
        "C:\Users\Admin\AppData\Local\Temp\Rebel\RebelCracked.exe"
        7⤵
        
        PID:4960
        
        C:\Users\Admin\AppData\Local\Temp\Rebel\RebelCracked.exe
        
        "C:\Users\Admin\AppData\Local\Temp\Rebel\RebelCracked.exe"
        8⤵
        
        PID:2040
        
        C:\Users\Admin\AppData\Local\Temp\RuntimeBroker.exe
        
        "C:\Users\Admin\AppData\Local\Temp\RuntimeBroker.exe"
        8⤵
        
        PID:1768
        
        C:\Users\Admin\AppData\Local\Temp\RuntimeBroker.exe
        
        "C:\Users\Admin\AppData\Local\Temp\RuntimeBroker.exe"
        7⤵
        
        PID:1920
      - C:\Users\Admin\AppData\Local\Temp\RuntimeBroker.exe
        
        "C:\Users\Admin\AppData\Local\Temp\RuntimeBroker.exe"
        6⤵
        
        PID:824
    - - C:\Users\Admin\AppData\Local\Temp\RuntimeBroker.exe
        
        "C:\Users\Admin\AppData\Local\Temp\RuntimeBroker.exe"
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious use of AdjustPrivilegeToken
        
        PID:364
  - - C:\Users\Admin\AppData\Local\Temp\RuntimeBroker.exe
      "C:\Users\Admin\AppData\Local\Temp\RuntimeBroker.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      PID:4188
- - C:\Users\Admin\AppData\Local\Temp\RuntimeBroker.exe
    "C:\Users\Admin\AppData\Local\Temp\RuntimeBroker.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:1588
- C:\Users\Admin\AppData\Local\Temp\RuntimeBroker.exe
  "C:\Users\Admin\AppData\Local\Temp\RuntimeBroker.exe"
  2⤵
  - Executes dropped EXE
  - Drops desktop.ini file(s)
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:400

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Browser Information Discovery

T1217

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\0d7fe3d5ec71cd87af3831504aa17ab5\Admin@NDKRNPGL_en-US\Browsers\Firefox\Bookmarks.txt

Filesize
105B

MD5
2e9d094dda5cdc3ce6519f75943a4ff4

SHA1
5d989b4ac8b699781681fe75ed9ef98191a5096c

SHA256
c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142

SHA512
d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\RebelCracked.exe.log

Filesize
654B

MD5
2cbbb74b7da1f720b48ed31085cbd5b8

SHA1
79caa9a3ea8abe1b9c4326c3633da64a5f724964

SHA256
e31b18f21621d9983bfdf1ea3e53884a9d58b8ffd79e0e5790da6f3a81a8b9d3

SHA512
ecf02d5240e0c1c005d3ab393aa7eff62bd498c2db5905157e2bf6d29e1b663228a9583950842629d1a4caef404c8941a0c7799b1a3bd1eb890a09fdb7efcff9

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

Filesize
175KB

MD5
59d9f02a7c904f21a175944dbeed3b13

SHA1
aa718c47c9cf57d16b7d3f4d8743a739fc05123b

SHA256
b8d40aee28967859278556d66452e861691ce10f41a4ace97fe87265294f6524

SHA512
1ecb75b6e334d3d0695ac50561eaa1ef9e87e8aeb370e053ded4d17dfff825e4b3d33b17a3728b5bda9008a7b85b33aa48a79821d286c99ae2c767a76908b36e

Download Submit
C:\Users\Admin\AppData\Local\Temp\places.raw

Filesize
5.0MB

MD5
a3aee2c31a5d54a2923872a9889cdab0

SHA1
13b0fed6bd9907b3c7475b5b4f22d55167223f38

SHA256
cd13db3ff5c3bfc897a2031c3f2a913097364242bce6fb5b68b6190659a2acf5

SHA512
794bcd4ef5a3568b9abd1aa406cf430d500f14f9d55b0e0592a33cb677135e8ff31ad821d806af99f7d8d39912a7cc5eb55328c34841a66bf67a01028c892566

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpDAA1.tmp.dat

Filesize
114KB

MD5
b90a70d7e385373c8edebf0c3ff549f0

SHA1
cdf4fb34071fc79c144fbd3a4d4a58c703701841

SHA256
51e234c09098ea32dd1422ce8304a043ace2962e24528988df220cc4f5358191

SHA512
b7c2f2a46d624148629e306b7298b4ed6eb5742c79458f84c5d70dd8e9159fd72996556988156bf6649d00e90b98cd9311ae037733a14abd7adb3eed8327ac3e

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpDAA3.tmp.dat

Filesize
160KB

MD5
f310cf1ff562ae14449e0167a3e1fe46

SHA1
85c58afa9049467031c6c2b17f5c12ca73bb2788

SHA256
e187946249cd390a3c1cf5d4e3b0d8f554f9acdc416bf4e7111fff217bb08855

SHA512
1196371de08c964268c44103ccaed530bda6a145df98e0f480d8ee5ad58cb6fb33ca4c9195a52181fe864726dcf52e6a7a466d693af0cda43400a3a7ef125fad

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpDAB5.tmp.dat

Filesize
112KB

MD5
87210e9e528a4ddb09c6b671937c79c6

SHA1
3c75314714619f5b55e25769e0985d497f0062f2

SHA256
eeb23424586eb7bc62b51b19f1719c6571b71b167f4d63f25984b7f5c5436db1

SHA512
f8cb8098dc8d478854cddddeac3396bc7b602c4d0449491ecacea7b9106672f36b55b377c724dc6881bee407c6b6c5c3352495ed4b852dd578aa3643a43e37c0

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpE36C.tmp.dat

Filesize
40KB

MD5
a182561a527f929489bf4b8f74f65cd7

SHA1
8cd6866594759711ea1836e86a5b7ca64ee8911f

SHA256
42aad7886965428a941508b776a666a4450eb658cb90e80fae1e7457fc71f914

SHA512
9bc3bf5a82f6f057e873adebd5b7a4c64adef966537ab9c565fe7c4bb3582e2e485ff993d5ab8a6002363231958fabd0933b48811371b8c155eaa74592b66558

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpE372.tmp.dat

Filesize
46KB

MD5
14ccc9293153deacbb9a20ee8f6ff1b7

SHA1
46b4d7b004ff4f1f40ad9f107fe7c7e3abc9a9f3

SHA256
3195ce0f7aa2eae2b21c447f264e2bd4e1dc5208353ac72d964a750de9a83511

SHA512
916f2178be05dc329461d2739271972238b22052b5935883da31e6c98d2697bd2435c9f6a2d1fcafb4811a1d867c761055532669aac2ea1a3a78c346cdeba765

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpE373.tmp.dat

Filesize
20KB

MD5
22be08f683bcc01d7a9799bbd2c10041

SHA1
2efb6041cf3d6e67970135e592569c76fc4c41de

SHA256
451c2c0cf3b7cb412a05347c6e75ed8680f0d2e5f2ab0f64cc2436db9309a457

SHA512
0eef192b3d5abe5d2435acf54b42c729c3979e4ad0b73d36666521458043ee7df1e10386bef266d7df9c31db94fb2833152bb2798936cb2082715318ef05d936

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpE374.tmp.dat

Filesize
116KB

MD5
4e2922249bf476fb3067795f2fa5e794

SHA1
d2db6b2759d9e650ae031eb62247d457ccaa57d2

SHA256
c2c17166e7468877d1e80822f8a5f35a7700ac0b68f3b369a1f4154ae4f811e1

SHA512
8e5e12daf11f9f6e73fb30f563c8f2a64bbc7bb9deffe4969e23081ec1c4073cdf6c74e8dbcc65a271142083ad8312ec7d59505c90e718a5228d369f4240e1da

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpE384.tmp.dat

Filesize
96KB

MD5
40f3eb83cc9d4cdb0ad82bd5ff2fb824

SHA1
d6582ba879235049134fa9a351ca8f0f785d8835

SHA256
cdd772b00ae53d4050150552b67028b7344bb1d345bceb495151cc969c27a0a0

SHA512
cdd4dbf0b1ba73464cd7c5008dc05458862e5f608e336b53638a14965becd4781cdea595fd6bd18d0bf402dccffd719da292a6ce67d359527b4691dc6d6d4cc2

Download Submit
memory/400-185-0x000000007490E000-0x000000007490F000-memory.dmp

Filesize
4KB

Download
memory/400-26-0x0000000004F10000-0x0000000004F76000-memory.dmp

Filesize
408KB

Download
memory/400-19-0x0000000000080000-0x00000000000B2000-memory.dmp

Filesize
200KB

Download
memory/400-17-0x000000007490E000-0x000000007490F000-memory.dmp

Filesize
4KB

Download
memory/548-205-0x000000001B3A0000-0x000000001B553000-memory.dmp

Filesize
1.7MB

Download
memory/1036-18-0x00007FFB86040000-0x00007FFB86B02000-memory.dmp

Filesize
10.8MB

Download
memory/1036-0-0x00007FFB86043000-0x00007FFB86045000-memory.dmp

Filesize
8KB

Download
memory/1036-15-0x000000001B620000-0x000000001B7D3000-memory.dmp

Filesize
1.7MB

Download
memory/1036-2-0x00007FFB86040000-0x00007FFB86B02000-memory.dmp

Filesize
10.8MB

Download
memory/1036-1-0x0000000000A00000-0x0000000000A2C000-memory.dmp

Filesize
176KB

Download
memory/1280-23-0x00007FFB86040000-0x00007FFB86B02000-memory.dmp

Filesize
10.8MB

Download
memory/1280-22-0x000000001B6D0000-0x000000001B883000-memory.dmp

Filesize
1.7MB

Download
memory/1280-16-0x00007FFB86040000-0x00007FFB86B02000-memory.dmp

Filesize
10.8MB

Download
memory/1576-25-0x000000001B5A0000-0x000000001B753000-memory.dmp

Filesize
1.7MB

Download
memory/2228-98-0x000000001B4F0000-0x000000001B6A3000-memory.dmp

Filesize
1.7MB

Download
memory/4960-335-0x000000001B1B0000-0x000000001B363000-memory.dmp

Filesize
1.7MB

Download
memory/4980-28-0x000000001BA00000-0x000000001BBB3000-memory.dmp

Filesize
1.7MB

Download