3624cb999e2bd4eae40b2b31253024f9980b89b6558004aff75a8910546c8931

General

Target

3624cb999e2bd4eae40b2b31253024f9980b89b6558004aff75a8910546c8931.exe
Size

72KB
MD5

1a8f83662f35bb6e47ae568d62918a5c
SHA1

5033608f379822d3609e62f7a696b52930ed018b
SHA256

3624cb999e2bd4eae40b2b31253024f9980b89b6558004aff75a8910546c8931
SHA512

e5eee50fb20aa6cf3d3a7925b765225e931754d2392a8a9d7ccdfefcb6816b37926e1820854ab0427009b735e774af293981158b68bcd3de4e6826ee8252ef73
SSDEEP

1536:5L5lxcQxgr9BcXzfGQz0/m4QdQiWC378JztYtfBpf4p7WtX4:blSQxgr9eXzd4/mxKIm+t3JI

Score

8^/10

aspackv2 bootkit persistence spyware stealer

Malware Config

Signatures

Blocklisted process makes network request 11 IoCs

flow	pid	Process
2	2636	rundll32.exe
4	2636	rundll32.exe
5	2636	rundll32.exe
7	2636	rundll32.exe
8	2636	rundll32.exe
9	2636	rundll32.exe
10	2636	rundll32.exe
11	2636	rundll32.exe
12	2636	rundll32.exe
14	2636	rundll32.exe
15	2636	rundll32.exe

ASPack v2.12-2.42 2 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

resource	yara_rule
behavioral1/files/0x00090000000120bd-3.dat	aspack_v212_v242
behavioral1/files/0x00090000000120bd-4.dat	aspack_v212_v242

Deletes itself 1 IoCs

pid	Process
3012	nzgmy.exe

Executes dropped EXE 1 IoCs

pid	Process
3012	nzgmy.exe

Loads dropped DLL 4 IoCs

pid	Process
2636	rundll32.exe
2636	rundll32.exe
2636	rundll32.exe
2636	rundll32.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

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-1-5-21-86725733-3001458681-3405935542-1000\Software\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\kttud\\gdwzjpyk.dll\",GetWindowClass"	rundll32.exe

Enumerates connected drives 3 TTPs 23 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PHYSICALDRIVE0	rundll32.exe

Checks processor information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	rundll32.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2780	PING.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2636	rundll32.exe
2636	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2636	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2208	3624cb999e2bd4eae40b2b31253024f9980b89b6558004aff75a8910546c8931.exe
3012	nzgmy.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 2208 wrote to memory of 2092	2208	3624cb999e2bd4eae40b2b31253024f9980b89b6558004aff75a8910546c8931.exe	25
PID 2208 wrote to memory of 2092	2208	3624cb999e2bd4eae40b2b31253024f9980b89b6558004aff75a8910546c8931.exe	25
PID 2208 wrote to memory of 2092	2208	3624cb999e2bd4eae40b2b31253024f9980b89b6558004aff75a8910546c8931.exe	25
PID 2208 wrote to memory of 2092	2208	3624cb999e2bd4eae40b2b31253024f9980b89b6558004aff75a8910546c8931.exe	25
PID 2092 wrote to memory of 2780	2092	cmd.exe	28
PID 2092 wrote to memory of 2780	2092	cmd.exe	28
PID 2092 wrote to memory of 2780	2092	cmd.exe	28
PID 2092 wrote to memory of 2780	2092	cmd.exe	28
PID 2092 wrote to memory of 3012	2092	cmd.exe	31
PID 2092 wrote to memory of 3012	2092	cmd.exe	31
PID 2092 wrote to memory of 3012	2092	cmd.exe	31
PID 2092 wrote to memory of 3012	2092	cmd.exe	31
PID 3012 wrote to memory of 2636	3012	nzgmy.exe	32
PID 3012 wrote to memory of 2636	3012	nzgmy.exe	32
PID 3012 wrote to memory of 2636	3012	nzgmy.exe	32
PID 3012 wrote to memory of 2636	3012	nzgmy.exe	32
PID 3012 wrote to memory of 2636	3012	nzgmy.exe	32
PID 3012 wrote to memory of 2636	3012	nzgmy.exe	32
PID 3012 wrote to memory of 2636	3012	nzgmy.exe	32

C:\Users\Admin\AppData\Local\Temp\3624cb999e2bd4eae40b2b31253024f9980b89b6558004aff75a8910546c8931.exe
"C:\Users\Admin\AppData\Local\Temp\3624cb999e2bd4eae40b2b31253024f9980b89b6558004aff75a8910546c8931.exe"
1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2208
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&c:\nzgmy.exe "C:\Users\Admin\AppData\Local\Temp\3624cb999e2bd4eae40b2b31253024f9980b89b6558004aff75a8910546c8931.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2092
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 2
    3⤵
    - Runs ping.exe
    PID:2780
- - \??\c:\nzgmy.exe
    c:\nzgmy.exe "C:\Users\Admin\AppData\Local\Temp\3624cb999e2bd4eae40b2b31253024f9980b89b6558004aff75a8910546c8931.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:3012
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\kttud\gdwzjpyk.dll",GetWindowClass c:\nzgmy.exe
      4⤵
      Blocklisted process makes network request
      Loads dropped DLL
      Adds Run key to start application
      Enumerates connected drives
      Writes to the Master Boot Record (MBR)
      Checks processor information in registry
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2636

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Peripheral Device Discovery

Query Registry

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\nzgmy.exe

Filesize
72KB

MD5
9f8b7c73fd429b2eb9734cd65d2711e1

SHA1
4dd44c9c1c2d1629df47bd682a190e34d5dea4ee

SHA256
aac50ae00fddb528569ebd2ccfe0dfa4bc7e09b03c8b39882f31116e7ec656f6

SHA512
bc0860b52a62127c57b1ea69a71c2a9d4f5c53378a532d83ee3641dfb2577f8a248d571c0c91b2ed70ae46e958ca2ec3f83dbe97ebf9558e96d8aa310c1e9b76

Download Submit
\??\c:\kttud\gdwzjpyk.dll

Filesize
46KB

MD5
a3fd41430ddcaa55fde840788925406a

SHA1
dbdd87f5c1bbf6a6f44c2e2c4744675d5e4e75c2

SHA256
f57f9e54f4774c2b944fb070ae0c2a02cbb4b7686ab3207544c3ccaff0ff3dd9

SHA512
23109572cfc9a282ea3ec84d93bfe02303d27f365ad2d9f47f6234f91da14c64f80133cc5e49746dfcb65d2454b7e7c13eff59ba4bbc18e09d2fb1c630ba59c9

Download Submit
\??\c:\nzgmy.exe

Filesize
72KB

MD5
9f8b7c73fd429b2eb9734cd65d2711e1

SHA1
4dd44c9c1c2d1629df47bd682a190e34d5dea4ee

SHA256
aac50ae00fddb528569ebd2ccfe0dfa4bc7e09b03c8b39882f31116e7ec656f6

SHA512
bc0860b52a62127c57b1ea69a71c2a9d4f5c53378a532d83ee3641dfb2577f8a248d571c0c91b2ed70ae46e958ca2ec3f83dbe97ebf9558e96d8aa310c1e9b76

Download Submit
\kttud\gdwzjpyk.dll

Filesize
46KB

MD5
a3fd41430ddcaa55fde840788925406a

SHA1
dbdd87f5c1bbf6a6f44c2e2c4744675d5e4e75c2

SHA256
f57f9e54f4774c2b944fb070ae0c2a02cbb4b7686ab3207544c3ccaff0ff3dd9

SHA512
23109572cfc9a282ea3ec84d93bfe02303d27f365ad2d9f47f6234f91da14c64f80133cc5e49746dfcb65d2454b7e7c13eff59ba4bbc18e09d2fb1c630ba59c9

Download Submit
\kttud\gdwzjpyk.dll

Filesize
46KB

MD5
a3fd41430ddcaa55fde840788925406a

SHA1
dbdd87f5c1bbf6a6f44c2e2c4744675d5e4e75c2

SHA256
f57f9e54f4774c2b944fb070ae0c2a02cbb4b7686ab3207544c3ccaff0ff3dd9

SHA512
23109572cfc9a282ea3ec84d93bfe02303d27f365ad2d9f47f6234f91da14c64f80133cc5e49746dfcb65d2454b7e7c13eff59ba4bbc18e09d2fb1c630ba59c9

Download Submit
\kttud\gdwzjpyk.dll

Filesize
46KB

MD5
a3fd41430ddcaa55fde840788925406a

SHA1
dbdd87f5c1bbf6a6f44c2e2c4744675d5e4e75c2

SHA256
f57f9e54f4774c2b944fb070ae0c2a02cbb4b7686ab3207544c3ccaff0ff3dd9

SHA512
23109572cfc9a282ea3ec84d93bfe02303d27f365ad2d9f47f6234f91da14c64f80133cc5e49746dfcb65d2454b7e7c13eff59ba4bbc18e09d2fb1c630ba59c9

Download Submit
\kttud\gdwzjpyk.dll

Filesize
46KB

MD5
a3fd41430ddcaa55fde840788925406a

SHA1
dbdd87f5c1bbf6a6f44c2e2c4744675d5e4e75c2

SHA256
f57f9e54f4774c2b944fb070ae0c2a02cbb4b7686ab3207544c3ccaff0ff3dd9

SHA512
23109572cfc9a282ea3ec84d93bfe02303d27f365ad2d9f47f6234f91da14c64f80133cc5e49746dfcb65d2454b7e7c13eff59ba4bbc18e09d2fb1c630ba59c9

Download Submit
memory/2208-2-0x0000000000400000-0x000000000041A000-memory.dmp

Filesize
104KB

Download
memory/2208-0-0x0000000000400000-0x000000000041A000-memory.dmp

Filesize
104KB

Download
memory/2636-13-0x0000000010000000-0x000000001002E000-memory.dmp

Filesize
184KB

Download
memory/2636-11-0x0000000010000000-0x000000001002E000-memory.dmp

Filesize
184KB

Download
memory/2636-14-0x0000000010000000-0x000000001002E000-memory.dmp

Filesize
184KB

Download
memory/2636-15-0x0000000010000000-0x000000001002E000-memory.dmp

Filesize
184KB

Download
memory/3012-6-0x0000000000400000-0x000000000041A000-memory.dmp

Filesize
104KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads