stormkitty | 01d2705a45a1217a55c4dfd27c91d8ffe69b74088e450ac20a162fc61169fd7a

General

Target

Crypter Jynx.exe
Size

1.5MB
MD5

d370fed0475e39de8843e54c3dfbd9d4
SHA1

294f2be4a06061b11ed53946e23ae70d305eb77a
SHA256

01d2705a45a1217a55c4dfd27c91d8ffe69b74088e450ac20a162fc61169fd7a
SHA512

d8041e531975a0ec554446a4a918e49d9d5e502d71ae5208012f9c5b26ae2c3fb749f49a9389580d5bf549e276a3f319229cbe1bc6a8c251e73fc52387a953a2
SSDEEP

24576:favnKiLNkwxE2olHKy4vUHuwN+4xeGPF17oiUFUKE+1YpW2J6BZDMdogJ6FS8:faiIXRiHj4cHi4h3U+KBWW28DMOo

Score

10^/10

stormkitty xworm discovery execution persistence rat spyware stealer trojan

Malware Config

Extracted

Family

xworm

C2

jynx.uncofig.com:1111

Attributes

Install_directory
%AppData%
install_file
svchost.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023b2b-6.dat	family_xworm
behavioral2/memory/2184-23-0x0000000000360000-0x000000000037A000-memory.dmp	family_xworm

StormKitty
StormKitty is an open source info stealer written in C#.
stealer stormkitty

StormKitty payload 1 IoCs

resource	yara_rule
behavioral2/memory/2184-91-0x000000001E2D0000-0x000000001E3EE000-memory.dmp	family_stormkitty

Stormkitty family
stormkitty
Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Xworm family
xworm

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
68	powershell.exe
2100	powershell.exe
3200	powershell.exe
3440	powershell.exe

Checks computer location settings 2 TTPs 2 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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	Crypter Jynx.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	helper.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	helper.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	helper.exe

Executes dropped EXE 2 IoCs

pid	Process
2184	helper.exe
4896	Phantom.exe

Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe"	helper.exe

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

Web Service

T1102

flow	ioc
11	raw.githubusercontent.com
12	raw.githubusercontent.com

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
16	ip-api.com

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 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	Phantom.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2184	helper.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
3440	powershell.exe
3440	powershell.exe
68	powershell.exe
68	powershell.exe
2100	powershell.exe
2100	powershell.exe
3200	powershell.exe
3200	powershell.exe
2184	helper.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	2184	helper.exe
Token: SeDebugPrivilege	4896	Phantom.exe
Token: SeDebugPrivilege	3440	powershell.exe
Token: SeDebugPrivilege	68	powershell.exe
Token: SeDebugPrivilege	2100	powershell.exe
Token: SeDebugPrivilege	3200	powershell.exe
Token: SeDebugPrivilege	2184	helper.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4896	Phantom.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2184	helper.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 1544 wrote to memory of 2184	1544	Crypter Jynx.exe	83
PID 1544 wrote to memory of 2184	1544	Crypter Jynx.exe	83
PID 1544 wrote to memory of 4896	1544	Crypter Jynx.exe	84
PID 1544 wrote to memory of 4896	1544	Crypter Jynx.exe	84
PID 1544 wrote to memory of 4896	1544	Crypter Jynx.exe	84
PID 2184 wrote to memory of 3440	2184	helper.exe	86
PID 2184 wrote to memory of 3440	2184	helper.exe	86
PID 2184 wrote to memory of 68	2184	helper.exe	89
PID 2184 wrote to memory of 68	2184	helper.exe	89
PID 2184 wrote to memory of 2100	2184	helper.exe	91
PID 2184 wrote to memory of 2100	2184	helper.exe	91
PID 2184 wrote to memory of 3200	2184	helper.exe	93
PID 2184 wrote to memory of 3200	2184	helper.exe	93

C:\Users\Admin\AppData\Local\Temp\Crypter Jynx.exe
"C:\Users\Admin\AppData\Local\Temp\Crypter Jynx.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1544
- C:\Users\Admin\AppData\Roaming\helper.exe
  "C:\Users\Admin\AppData\Roaming\helper.exe"
  2⤵
  - Checks computer location settings
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2184
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\helper.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3440
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'helper.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:68
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\svchost.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2100
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3200
- C:\Users\Admin\AppData\Roaming\Phantom.exe
  "C:\Users\Admin\AppData\Roaming\Phantom.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  PID:4896

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Browser Information Discovery

Query Registry

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
2979eabc783eaca50de7be23dd4eafcf

SHA1
d709ce5f3a06b7958a67e20870bfd95b83cad2ea

SHA256
006cca90e78fbb571532a83082ac6712721a34ea4b21f490058ffb3f521f4903

SHA512
92bc433990572d9427d0c93eef9bd1cc23fa00ed60dd0c9c983d87d3421e02ce3f156c6f88fe916ef6782dbf185cbce083bc0094f8c527f302be6a37d1c53aba

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
d8cb3e9459807e35f02130fad3f9860d

SHA1
5af7f32cb8a30e850892b15e9164030a041f4bd6

SHA256
2b139c74072ccbdaa17b950f32a6dbc934dfb7af9973d97c9b0d9c498012ba68

SHA512
045239ba31367fbdd59e883f74eafc05724e23bd6e8f0c1e7171ea2496a497eb9e0cfcb57285bb81c4d569daadba43d6ef64c626ca48f1e2a59e8d97f0cc9184

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
da5c82b0e070047f7377042d08093ff4

SHA1
89d05987cd60828cca516c5c40c18935c35e8bd3

SHA256
77a94ef8c4258445d538a6006ffadb05afdf888f6f044e1e5466b981a07f16c5

SHA512
7360311a3c97b73dd3f6d7179cd979e0e20d69f380d38292447e17e369087d9dd5acb66cd0cbdd95ac4bfb16e5a1b86825f835a8d45b14ea9812102cff59704b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_kx1qu3oi.ktg.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
1.5MB

MD5
77447f97bedafe2dc903866ad18e25d6

SHA1
aef3c31376a39c2fff32a5c0ee7807257e9f6108

SHA256
2d32e99c12044e303025702f893ff65cf9a1a3cbc4991129f8188ee055d943f4

SHA512
8cd0760429bc259fe3ac7712af143e60e432e27be958f9ff0a1d73ad1d8298dd45137ba06bdda506f3fba930dff905a2c7b814045a25ca081cf930f565976475

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

Filesize
81KB

MD5
bac22f7b34e1324af3401020d4831867

SHA1
6240c0d1ab52a65738a958ca3c5e360f7f0a2b6f

SHA256
9541d84a204d6271f0ba7bdfa7513d7f555e7f73fbf0142acdb347b61a9f821d

SHA512
2f8d100c90b8a816504f64b594f1a6f7e300bd4f080d4926581f279dca594b7c8342ec941f175782b599cfdb823b60582097d045ba8b57a1826521dd1d283ab5

Download Submit
memory/1544-1-0x0000000000540000-0x00000000006D2000-memory.dmp

Filesize
1.6MB

Download
memory/1544-0-0x00007FFE10933000-0x00007FFE10935000-memory.dmp

Filesize
8KB

Download
memory/2184-23-0x0000000000360000-0x000000000037A000-memory.dmp

Filesize
104KB

Download
memory/2184-88-0x000000001B010000-0x000000001B020000-memory.dmp

Filesize
64KB

Download
memory/2184-86-0x00007FFE10930000-0x00007FFE113F1000-memory.dmp

Filesize
10.8MB

Download
memory/2184-89-0x00000000022F0000-0x00000000022FC000-memory.dmp

Filesize
48KB

Download
memory/2184-35-0x000000001B010000-0x000000001B020000-memory.dmp

Filesize
64KB

Download
memory/2184-91-0x000000001E2D0000-0x000000001E3EE000-memory.dmp

Filesize
1.1MB

Download
memory/2184-130-0x000000001E6D0000-0x000000001EA20000-memory.dmp

Filesize
3.3MB

Download
memory/2184-26-0x00007FFE10930000-0x00007FFE113F1000-memory.dmp

Filesize
10.8MB

Download
memory/3440-41-0x000002457F9A0000-0x000002457F9C2000-memory.dmp

Filesize
136KB

Download
memory/4896-28-0x000000007500E000-0x000000007500F000-memory.dmp

Filesize
4KB

Download
memory/4896-33-0x0000000006620000-0x00000000066D0000-memory.dmp

Filesize
704KB

Download
memory/4896-32-0x0000000075000000-0x00000000757B0000-memory.dmp

Filesize
7.7MB

Download
memory/4896-87-0x0000000075000000-0x00000000757B0000-memory.dmp

Filesize
7.7MB

Download
memory/4896-31-0x0000000005520000-0x000000000552A000-memory.dmp

Filesize
40KB

Download
memory/4896-30-0x0000000005360000-0x00000000053F2000-memory.dmp

Filesize
584KB

Download
memory/4896-29-0x0000000005B70000-0x0000000006114000-memory.dmp

Filesize
5.6MB

Download
memory/4896-27-0x0000000000810000-0x000000000098A000-memory.dmp

Filesize
1.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads