stormkitty | 01dc20c640b1a5d41354f57e06b324ff2a5753cd1ef98c5f5773c5475284e27d

General

Target

bc7EKCf.exe
Size

2.9MB
MD5

c042e73bc713b483058772dabf080733
SHA1

06f64d679249be4d555fc81e495b871b09b98976
SHA256

01dc20c640b1a5d41354f57e06b324ff2a5753cd1ef98c5f5773c5475284e27d
SHA512

a019c0fa3dd6f179fe748a33aa4f5e62197b232cadca5b481fbb75688ec81dd1b78c7ddd3e64744f7ffca6b578a26382b66ca3982e394b1c61412193c1eaf98f
SSDEEP

49152:XTPo/58bWNrFMnwfHvo1FyeOhJG0BNpBtDmMT2N1a3wc2zmHayHNABEc4v0OqMPE:XzoBG+FMwfP6FyTiipHaMT2ukAtUFL4J

Score

10^/10

stormkitty discovery stealer

Malware Config

Signatures

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

StormKitty payload 5 IoCs

resource	yara_rule
behavioral1/memory/2824-17-0x0000000000400000-0x0000000000694000-memory.dmp	family_stormkitty
behavioral1/memory/2824-15-0x0000000000400000-0x0000000000694000-memory.dmp	family_stormkitty
behavioral1/memory/2824-12-0x0000000000400000-0x0000000000694000-memory.dmp	family_stormkitty
behavioral1/memory/2824-9-0x0000000000400000-0x0000000000694000-memory.dmp	family_stormkitty
behavioral1/memory/2824-8-0x0000000000400000-0x0000000000694000-memory.dmp	family_stormkitty

Stormkitty family
stormkitty

Deletes itself 1 IoCs

pid	Process
2096	cmd.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	bc7EKCf.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	bc7EKCf.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2280 set thread context of 2824	2280	bc7EKCf.exe	31

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 6 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	bc7EKCf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bc7EKCf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chcp.com
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	taskkill.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1432	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
1904	taskkill.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2280	bc7EKCf.exe
2280	bc7EKCf.exe
2824	bc7EKCf.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2280	bc7EKCf.exe
Token: SeDebugPrivilege	2824	bc7EKCf.exe
Token: SeDebugPrivilege	1904	taskkill.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 2280 wrote to memory of 2824	2280	bc7EKCf.exe	31
PID 2280 wrote to memory of 2824	2280	bc7EKCf.exe	31
PID 2280 wrote to memory of 2824	2280	bc7EKCf.exe	31
PID 2280 wrote to memory of 2824	2280	bc7EKCf.exe	31
PID 2280 wrote to memory of 2824	2280	bc7EKCf.exe	31
PID 2280 wrote to memory of 2824	2280	bc7EKCf.exe	31
PID 2280 wrote to memory of 2824	2280	bc7EKCf.exe	31
PID 2280 wrote to memory of 2824	2280	bc7EKCf.exe	31
PID 2280 wrote to memory of 2824	2280	bc7EKCf.exe	31
PID 2824 wrote to memory of 2096	2824	bc7EKCf.exe	32
PID 2824 wrote to memory of 2096	2824	bc7EKCf.exe	32
PID 2824 wrote to memory of 2096	2824	bc7EKCf.exe	32
PID 2824 wrote to memory of 2096	2824	bc7EKCf.exe	32
PID 2096 wrote to memory of 2428	2096	cmd.exe	34
PID 2096 wrote to memory of 2428	2096	cmd.exe	34
PID 2096 wrote to memory of 2428	2096	cmd.exe	34
PID 2096 wrote to memory of 2428	2096	cmd.exe	34
PID 2096 wrote to memory of 1904	2096	cmd.exe	35
PID 2096 wrote to memory of 1904	2096	cmd.exe	35
PID 2096 wrote to memory of 1904	2096	cmd.exe	35
PID 2096 wrote to memory of 1904	2096	cmd.exe	35
PID 2096 wrote to memory of 1432	2096	cmd.exe	36
PID 2096 wrote to memory of 1432	2096	cmd.exe	36
PID 2096 wrote to memory of 1432	2096	cmd.exe	36
PID 2096 wrote to memory of 1432	2096	cmd.exe	36

C:\Users\Admin\AppData\Local\Temp\bc7EKCf.exe
"C:\Users\Admin\AppData\Local\Temp\bc7EKCf.exe"
1⤵
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2280
- C:\Users\Admin\AppData\Local\Temp\bc7EKCf.exe
  "C:\Users\Admin\AppData\Local\Temp\bc7EKCf.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2824
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\tmp9675.tmp.bat & Del C:\Users\Admin\AppData\Local\Temp\tmp9675.tmp.bat"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2096
  - - C:\Windows\SysWOW64\chcp.com
      chcp 65001
      4⤵
      System Location Discovery: System Language Discovery
      PID:2428
  - - C:\Windows\SysWOW64\taskkill.exe
      TaskKill /F /PID 2824
      4⤵
      System Location Discovery: System Language Discovery
      Kills process with taskkill
      Suspicious use of AdjustPrivilegeToken
      PID:1904
  - - C:\Windows\SysWOW64\timeout.exe
      Timeout /T 2 /Nobreak
      4⤵
      System Location Discovery: System Language Discovery
      Delays execution with timeout.exe
      PID:1432

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

2

T1082

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\tmp9675.tmp.bat

Filesize
115B

MD5
e3935b0884a9a6c97bd0d2d5b0a842cd

SHA1
83cf76974a715a2353d6a516cc89e8747057ec3f

SHA256
873ffabdc883ba4c0fbb09f7bb2913fb023e7a42cf1ff6ae3847fa2a84b63b94

SHA512
c66e1e33d57852e69b982bbf83f76e48c8c34837d196c7cb6694d4ccedd41350191479d21df14f82f0ed84cca17428a53c86ce2c62554d4a0f1bd3955f545d51

Download Submit
memory/2280-13-0x0000000074420000-0x0000000074B0E000-memory.dmp

Filesize
6.9MB

Download
memory/2280-1-0x0000000001330000-0x000000000161A000-memory.dmp

Filesize
2.9MB

Download
memory/2280-2-0x0000000074420000-0x0000000074B0E000-memory.dmp

Filesize
6.9MB

Download
memory/2280-3-0x0000000000960000-0x000000000097A000-memory.dmp

Filesize
104KB

Download
memory/2280-24-0x0000000074420000-0x0000000074B0E000-memory.dmp

Filesize
6.9MB

Download
memory/2280-23-0x000000007442E000-0x000000007442F000-memory.dmp

Filesize
4KB

Download
memory/2280-0-0x000000007442E000-0x000000007442F000-memory.dmp

Filesize
4KB

Download
memory/2824-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2824-20-0x0000000000360000-0x0000000000370000-memory.dmp

Filesize
64KB

Download
memory/2824-15-0x0000000000400000-0x0000000000694000-memory.dmp

Filesize
2.6MB

Download
memory/2824-9-0x0000000000400000-0x0000000000694000-memory.dmp

Filesize
2.6MB

Download
memory/2824-8-0x0000000000400000-0x0000000000694000-memory.dmp

Filesize
2.6MB

Download
memory/2824-6-0x0000000000400000-0x0000000000694000-memory.dmp

Filesize
2.6MB

Download
memory/2824-21-0x0000000074420000-0x0000000074B0E000-memory.dmp

Filesize
6.9MB

Download
memory/2824-12-0x0000000000400000-0x0000000000694000-memory.dmp

Filesize
2.6MB

Download
memory/2824-19-0x0000000000350000-0x000000000035A000-memory.dmp

Filesize
40KB

Download
memory/2824-22-0x0000000000370000-0x0000000000378000-memory.dmp

Filesize
32KB

Download
memory/2824-18-0x0000000074420000-0x0000000074B0E000-memory.dmp

Filesize
6.9MB

Download
memory/2824-17-0x0000000000400000-0x0000000000694000-memory.dmp

Filesize
2.6MB

Download
memory/2824-25-0x0000000074420000-0x0000000074B0E000-memory.dmp

Filesize
6.9MB

Download
memory/2824-4-0x0000000000400000-0x0000000000694000-memory.dmp

Filesize
2.6MB

Download
memory/2824-28-0x0000000074420000-0x0000000074B0E000-memory.dmp

Filesize
6.9MB

Download

Analysis

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