socks5systemz | 53d38cb803bad82b0f4d4e7834ef6e242e1829d4e9f33138de5b2191076ad6d1

General

Target

53d38cb803bad82b0f4d4e7834ef6e242e1829d4e9f33138de5b2191076ad6d1.exe
Size

5.8MB
MD5

6bb027d2f9641e20e09105e6e558cd5f
SHA1

ccb5cfe046324d0e60ee364af0f43e6a58476e1a
SHA256

53d38cb803bad82b0f4d4e7834ef6e242e1829d4e9f33138de5b2191076ad6d1
SHA512

59272e48324e25aa1fe3ad4ffeb460109bfc8c2665404d822abb93d206c48646ad2899b99a35662d9ea28420b7ddf48feaaf420114123625b87e867272fa3464
SSDEEP

98304:PX4o8EPYylDOUWQw0qv1IinAhD7P2ER6yhiWEWhhcTkor3emHFe56T0z8UCyazxk:vZjPYyliDQwNs2ER62QEhcT1rvvT06yx

Score

10^/10

socks5systemz botnet discovery

Malware Config

Signatures

Detect Socks5Systemz Payload 1 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2724-99-0x00000000031C0000-0x0000000003262000-memory.dmp	family_socks5systemz

Socks5Systemz
Socks5Systemz is a botnet written in C++.
botnet socks5systemz
Socks5systemz family
socks5systemz

Executes dropped EXE 2 IoCs

Processes:

53d38cb803bad82b0f4d4e7834ef6e242e1829d4e9f33138de5b2191076ad6d1.tmpflashbackexpress.exe

pid	Process
848	53d38cb803bad82b0f4d4e7834ef6e242e1829d4e9f33138de5b2191076ad6d1.tmp
2724	flashbackexpress.exe

Loads dropped DLL 4 IoCs

Processes:

53d38cb803bad82b0f4d4e7834ef6e242e1829d4e9f33138de5b2191076ad6d1.exe53d38cb803bad82b0f4d4e7834ef6e242e1829d4e9f33138de5b2191076ad6d1.tmpflashbackexpress.exe

pid	Process
1548	53d38cb803bad82b0f4d4e7834ef6e242e1829d4e9f33138de5b2191076ad6d1.exe
848	53d38cb803bad82b0f4d4e7834ef6e242e1829d4e9f33138de5b2191076ad6d1.tmp
848	53d38cb803bad82b0f4d4e7834ef6e242e1829d4e9f33138de5b2191076ad6d1.tmp
2724	flashbackexpress.exe

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

System Location Discovery: System Language Discovery 1 TTPs 5 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

Processes:

net.exeflashbackexpress.exenet1.exe53d38cb803bad82b0f4d4e7834ef6e242e1829d4e9f33138de5b2191076ad6d1.exe53d38cb803bad82b0f4d4e7834ef6e242e1829d4e9f33138de5b2191076ad6d1.tmp

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	net.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	flashbackexpress.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	net1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	53d38cb803bad82b0f4d4e7834ef6e242e1829d4e9f33138de5b2191076ad6d1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	53d38cb803bad82b0f4d4e7834ef6e242e1829d4e9f33138de5b2191076ad6d1.tmp

Runs net.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

53d38cb803bad82b0f4d4e7834ef6e242e1829d4e9f33138de5b2191076ad6d1.tmp

pid	Process
848	53d38cb803bad82b0f4d4e7834ef6e242e1829d4e9f33138de5b2191076ad6d1.tmp
848	53d38cb803bad82b0f4d4e7834ef6e242e1829d4e9f33138de5b2191076ad6d1.tmp

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

53d38cb803bad82b0f4d4e7834ef6e242e1829d4e9f33138de5b2191076ad6d1.tmp

pid	Process
848	53d38cb803bad82b0f4d4e7834ef6e242e1829d4e9f33138de5b2191076ad6d1.tmp

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

53d38cb803bad82b0f4d4e7834ef6e242e1829d4e9f33138de5b2191076ad6d1.exe53d38cb803bad82b0f4d4e7834ef6e242e1829d4e9f33138de5b2191076ad6d1.tmpnet.exe

description	pid	Process	procid_target
PID 1548 wrote to memory of 848	1548	53d38cb803bad82b0f4d4e7834ef6e242e1829d4e9f33138de5b2191076ad6d1.exe	30
PID 1548 wrote to memory of 848	1548	53d38cb803bad82b0f4d4e7834ef6e242e1829d4e9f33138de5b2191076ad6d1.exe	30
PID 1548 wrote to memory of 848	1548	53d38cb803bad82b0f4d4e7834ef6e242e1829d4e9f33138de5b2191076ad6d1.exe	30
PID 1548 wrote to memory of 848	1548	53d38cb803bad82b0f4d4e7834ef6e242e1829d4e9f33138de5b2191076ad6d1.exe	30
PID 1548 wrote to memory of 848	1548	53d38cb803bad82b0f4d4e7834ef6e242e1829d4e9f33138de5b2191076ad6d1.exe	30
PID 1548 wrote to memory of 848	1548	53d38cb803bad82b0f4d4e7834ef6e242e1829d4e9f33138de5b2191076ad6d1.exe	30
PID 1548 wrote to memory of 848	1548	53d38cb803bad82b0f4d4e7834ef6e242e1829d4e9f33138de5b2191076ad6d1.exe	30
PID 848 wrote to memory of 2828	848	53d38cb803bad82b0f4d4e7834ef6e242e1829d4e9f33138de5b2191076ad6d1.tmp	31
PID 848 wrote to memory of 2828	848	53d38cb803bad82b0f4d4e7834ef6e242e1829d4e9f33138de5b2191076ad6d1.tmp	31
PID 848 wrote to memory of 2828	848	53d38cb803bad82b0f4d4e7834ef6e242e1829d4e9f33138de5b2191076ad6d1.tmp	31
PID 848 wrote to memory of 2828	848	53d38cb803bad82b0f4d4e7834ef6e242e1829d4e9f33138de5b2191076ad6d1.tmp	31
PID 848 wrote to memory of 2724	848	53d38cb803bad82b0f4d4e7834ef6e242e1829d4e9f33138de5b2191076ad6d1.tmp	33
PID 848 wrote to memory of 2724	848	53d38cb803bad82b0f4d4e7834ef6e242e1829d4e9f33138de5b2191076ad6d1.tmp	33
PID 848 wrote to memory of 2724	848	53d38cb803bad82b0f4d4e7834ef6e242e1829d4e9f33138de5b2191076ad6d1.tmp	33
PID 848 wrote to memory of 2724	848	53d38cb803bad82b0f4d4e7834ef6e242e1829d4e9f33138de5b2191076ad6d1.tmp	33
PID 2828 wrote to memory of 2888	2828	net.exe	34
PID 2828 wrote to memory of 2888	2828	net.exe	34
PID 2828 wrote to memory of 2888	2828	net.exe	34
PID 2828 wrote to memory of 2888	2828	net.exe	34

C:\Users\Admin\AppData\Local\Temp\53d38cb803bad82b0f4d4e7834ef6e242e1829d4e9f33138de5b2191076ad6d1.exe
"C:\Users\Admin\AppData\Local\Temp\53d38cb803bad82b0f4d4e7834ef6e242e1829d4e9f33138de5b2191076ad6d1.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1548
- C:\Users\Admin\AppData\Local\Temp\is-RH9N9.tmp\53d38cb803bad82b0f4d4e7834ef6e242e1829d4e9f33138de5b2191076ad6d1.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-RH9N9.tmp\53d38cb803bad82b0f4d4e7834ef6e242e1829d4e9f33138de5b2191076ad6d1.tmp" /SL5="$4010A,5393249,721408,C:\Users\Admin\AppData\Local\Temp\53d38cb803bad82b0f4d4e7834ef6e242e1829d4e9f33138de5b2191076ad6d1.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of WriteProcessMemory
  PID:848
- - C:\Windows\SysWOW64\net.exe
    "C:\Windows\system32\net.exe" pause flash_back_express_11161
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2828
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 pause flash_back_express_11161
      4⤵
      System Location Discovery: System Language Discovery
      PID:2888
- - C:\Users\Admin\AppData\Local\FlashBack Express 3.13.0.12\flashbackexpress.exe
    "C:\Users\Admin\AppData\Local\FlashBack Express 3.13.0.12\flashbackexpress.exe" -i
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    PID:2724

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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\FlashBack Express 3.13.0.12\sqlite3.dll

Filesize
630KB

MD5
e477a96c8f2b18d6b5c27bde49c990bf

SHA1
e980c9bf41330d1e5bd04556db4646a0210f7409

SHA256
16574f51785b0e2fc29c2c61477eb47bb39f714829999511dc8952b43ab17660

SHA512
335a86268e7c0e568b1c30981ec644e6cd332e66f96d2551b58a82515316693c1859d87b4f4b7310cf1ac386cee671580fdd999c3bcb23acf2c2282c01c8798c

Download Submit
\Users\Admin\AppData\Local\FlashBack Express 3.13.0.12\flashbackexpress.exe

Filesize
4.4MB

MD5
7aa9897f92e88dd69cef5031096c32cd

SHA1
52c9973e7da2745cb14b7b7ecea2efc033e5e5f5

SHA256
065c2ba7e125c746ff786b9194a1efb2920c0032c27e7e11f554f32afee90190

SHA512
f3a82bb3577a0cb091c97522c532256d84a90276ee74fdfb274c95b7f12e4dcd636a24cdc5d4c61f51efd880d64f00fd0e4cbdbd31294114555a17a5b758c1a3

Download Submit
\Users\Admin\AppData\Local\Temp\is-5RHR3.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-RH9N9.tmp\53d38cb803bad82b0f4d4e7834ef6e242e1829d4e9f33138de5b2191076ad6d1.tmp

Filesize
2.4MB

MD5
41c4d4964d873a0bef530b30447ca8ba

SHA1
6e1b61f5936994098b2d63b378eb217f87954b99

SHA256
ed40a1168d602b9469f0b219cd31238c0193d2c9a5e07ae8b152b6aafc4b9900

SHA512
88bf9732a59367b48ca0884397c6763a7e14f2e8a57d2c11801e54c3499f93f30a10a1f6e1e535a109c33fe6a8374bea4cf5c176462f78c51f23321ebb4c1998

Download Submit
memory/848-75-0x00000000042D0000-0x000000000473D000-memory.dmp

Filesize
4.4MB

Download
memory/848-63-0x00000000042D0000-0x000000000473D000-memory.dmp

Filesize
4.4MB

Download
memory/848-8-0x0000000000400000-0x0000000000679000-memory.dmp

Filesize
2.5MB

Download
memory/848-72-0x0000000000400000-0x0000000000679000-memory.dmp

Filesize
2.5MB

Download
memory/1548-73-0x0000000000400000-0x00000000004BE000-memory.dmp

Filesize
760KB

Download
memory/1548-2-0x0000000000401000-0x00000000004A9000-memory.dmp

Filesize
672KB

Download
memory/1548-0-0x0000000000400000-0x00000000004BE000-memory.dmp

Filesize
760KB

Download
memory/2724-78-0x0000000000400000-0x000000000086D000-memory.dmp

Filesize
4.4MB

Download
memory/2724-89-0x0000000000400000-0x000000000086D000-memory.dmp

Filesize
4.4MB

Download
memory/2724-76-0x0000000000400000-0x000000000086D000-memory.dmp

Filesize
4.4MB

Download
memory/2724-77-0x0000000060900000-0x0000000060992000-memory.dmp

Filesize
584KB

Download
memory/2724-66-0x0000000000400000-0x000000000086D000-memory.dmp

Filesize
4.4MB

Download
memory/2724-81-0x0000000000400000-0x000000000086D000-memory.dmp

Filesize
4.4MB

Download
memory/2724-85-0x0000000000400000-0x000000000086D000-memory.dmp

Filesize
4.4MB

Download
memory/2724-68-0x0000000000400000-0x000000000086D000-memory.dmp

Filesize
4.4MB

Download
memory/2724-93-0x0000000000400000-0x000000000086D000-memory.dmp

Filesize
4.4MB

Download
memory/2724-97-0x0000000000400000-0x000000000086D000-memory.dmp

Filesize
4.4MB

Download
memory/2724-99-0x00000000031C0000-0x0000000003262000-memory.dmp

Filesize
648KB

Download
memory/2724-105-0x0000000000400000-0x000000000086D000-memory.dmp

Filesize
4.4MB

Download
memory/2724-109-0x0000000000400000-0x000000000086D000-memory.dmp

Filesize
4.4MB

Download
memory/2724-113-0x0000000000400000-0x000000000086D000-memory.dmp

Filesize
4.4MB

Download
memory/2724-117-0x0000000000400000-0x000000000086D000-memory.dmp

Filesize
4.4MB

Download
memory/2724-121-0x0000000000400000-0x000000000086D000-memory.dmp

Filesize
4.4MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads