socks5systemz | 38eef33cea1306be6f7cd291886e46d49a2dc716a989721920cd5575ab88d23a

General

Target

38eef33cea1306be6f7cd291886e46d49a2dc716a989721920cd5575ab88d23a.exe
Size

4.7MB
MD5

57e1ef6e4594f05cd796583d58a49b5d
SHA1

6054e2e48eb6bfe5d28440e9fbd8da2d75137d45
SHA256

38eef33cea1306be6f7cd291886e46d49a2dc716a989721920cd5575ab88d23a
SHA512

69fc7ac32845f87c1687ed2db11cedaca39501048746b32e000e639ea32ebe67fcda48bbd4db55a39695c7d194b227745b3ba0e1ee92f7096904e5b829108584
SSDEEP

98304:mg6mvgxVO0cdG07L9nEUuVV8Nx/s8idMzSG9ycjO6ipC6:l1vg3O0NeEJVIW8idaTO6y

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

bukkkjp.com

http://bukkkjp.com/search/?q=67e28dd8685af379125bfd4e7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa49e8889b5e4fa9281ae978f271ea771795af8e05c645db22f31dfe339426fa11a366c350adb719a9577e55b8603e983a608ff712c1e7929e3a

fiuhebo.ru

http://fiuhebo.ru/search/?q=67e28dd8685af379125bfd4e7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa49e8889b5e4fa9281ae978f271ea771795af8e05c645db22f31dfe339426fa11a366c350adb719a9577e55b8603e983a608ff712c1e7929e3a

Signatures

Detect Socks5Systemz Payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/916-84-0x0000000000A10000-0x0000000000AB2000-memory.dmp	family_socks5systemz

Socks5Systemz
Socks5Systemz is a botnet written in C++.
botnet socks5systemz
Executes dropped EXE 3 IoCs

Processes:

38eef33cea1306be6f7cd291886e46d49a2dc716a989721920cd5575ab88d23a.tmplesserextent32.exelesserextent32.exe

pid process

2468 38eef33cea1306be6f7cd291886e46d49a2dc716a989721920cd5575ab88d23a.tmp
316 lesserextent32.exe
916 lesserextent32.exe
Loads dropped DLL 1 IoCs

Processes:

38eef33cea1306be6f7cd291886e46d49a2dc716a989721920cd5575ab88d23a.tmp

pid process

2468 38eef33cea1306be6f7cd291886e46d49a2dc716a989721920cd5575ab88d23a.tmp
Unexpected DNS network traffic destination 2 IoCs
Network traffic to other servers than the configured DNS servers was detected on the DNS port.

Processes:

description ioc

Destination IP 45.155.250.90
Destination IP 45.155.250.90
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
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

38eef33cea1306be6f7cd291886e46d49a2dc716a989721920cd5575ab88d23a.tmp

pid process

2468 38eef33cea1306be6f7cd291886e46d49a2dc716a989721920cd5575ab88d23a.tmp

pid	process
2468	38eef33cea1306be6f7cd291886e46d49a2dc716a989721920cd5575ab88d23a.tmp
316	lesserextent32.exe
916	lesserextent32.exe

pid	process
2468	38eef33cea1306be6f7cd291886e46d49a2dc716a989721920cd5575ab88d23a.tmp

description	ioc
Destination IP	45.155.250.90
Destination IP	45.155.250.90

pid	process
2468	38eef33cea1306be6f7cd291886e46d49a2dc716a989721920cd5575ab88d23a.tmp

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

38eef33cea1306be6f7cd291886e46d49a2dc716a989721920cd5575ab88d23a.exe38eef33cea1306be6f7cd291886e46d49a2dc716a989721920cd5575ab88d23a.tmp

description	pid	process	target process
PID 3800 wrote to memory of 2468	3800	38eef33cea1306be6f7cd291886e46d49a2dc716a989721920cd5575ab88d23a.exe	38eef33cea1306be6f7cd291886e46d49a2dc716a989721920cd5575ab88d23a.tmp
PID 3800 wrote to memory of 2468	3800	38eef33cea1306be6f7cd291886e46d49a2dc716a989721920cd5575ab88d23a.exe	38eef33cea1306be6f7cd291886e46d49a2dc716a989721920cd5575ab88d23a.tmp
PID 3800 wrote to memory of 2468	3800	38eef33cea1306be6f7cd291886e46d49a2dc716a989721920cd5575ab88d23a.exe	38eef33cea1306be6f7cd291886e46d49a2dc716a989721920cd5575ab88d23a.tmp
PID 2468 wrote to memory of 316	2468	38eef33cea1306be6f7cd291886e46d49a2dc716a989721920cd5575ab88d23a.tmp	lesserextent32.exe
PID 2468 wrote to memory of 316	2468	38eef33cea1306be6f7cd291886e46d49a2dc716a989721920cd5575ab88d23a.tmp	lesserextent32.exe
PID 2468 wrote to memory of 316	2468	38eef33cea1306be6f7cd291886e46d49a2dc716a989721920cd5575ab88d23a.tmp	lesserextent32.exe
PID 2468 wrote to memory of 916	2468	38eef33cea1306be6f7cd291886e46d49a2dc716a989721920cd5575ab88d23a.tmp	lesserextent32.exe
PID 2468 wrote to memory of 916	2468	38eef33cea1306be6f7cd291886e46d49a2dc716a989721920cd5575ab88d23a.tmp	lesserextent32.exe
PID 2468 wrote to memory of 916	2468	38eef33cea1306be6f7cd291886e46d49a2dc716a989721920cd5575ab88d23a.tmp	lesserextent32.exe

C:\Users\Admin\AppData\Local\Temp\38eef33cea1306be6f7cd291886e46d49a2dc716a989721920cd5575ab88d23a.exe
"C:\Users\Admin\AppData\Local\Temp\38eef33cea1306be6f7cd291886e46d49a2dc716a989721920cd5575ab88d23a.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3800

C:\Users\Admin\AppData\Local\Temp\is-5JUD6.tmp\38eef33cea1306be6f7cd291886e46d49a2dc716a989721920cd5575ab88d23a.tmp
"C:\Users\Admin\AppData\Local\Temp\is-5JUD6.tmp\38eef33cea1306be6f7cd291886e46d49a2dc716a989721920cd5575ab88d23a.tmp" /SL5="$601F4,4670939,54272,C:\Users\Admin\AppData\Local\Temp\38eef33cea1306be6f7cd291886e46d49a2dc716a989721920cd5575ab88d23a.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:2468

C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe
"C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe" -i
3⤵
- Executes dropped EXE
PID:316

C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe
"C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe" -s
3⤵
- Executes dropped EXE
PID:916

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 Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe
Filesize
2.8MB

MD5
faa56454110b42041d2216d0c4aa149b

SHA1
18efc2dc4f56e85ed83de085443eef3266f16bb6

SHA256
37c4f8bf186a730baa2650daf03ff51fe5ecd1535854e5d7ef759465d55c564c

SHA512
22820f53ada3165c2c08ea1cafd110892253777aff11626db7491540b98c29dfeaf9e714f95ab41067d41991b36e275de4a930547da6be274bd3c31e689cdaa7

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-5JUD6.tmp\38eef33cea1306be6f7cd291886e46d49a2dc716a989721920cd5575ab88d23a.tmp
Filesize
680KB

MD5
dff4f58a01a8e88e4a2f821ca761d901

SHA1
e67e24669220213f895b68c0d662b02b03469b4a

SHA256
91b049634c65dbe18368e1f2ead4ae48f62b92fdfcd119ccea0919b68bf56e76

SHA512
049cebaa8bc30f2b7b90a49f6022271247fab2a3bc0fd2e9f36d1f27e0c37926f00deedd92b5d85a8b34f2f6e9b59ee3b7e12510cfa720935a86ba820132817a

Download Submit
\Users\Admin\AppData\Local\Temp\is-J6MOK.tmp\_isetup\_iscrypt.dll
Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
memory/316-59-0x0000000000400000-0x00000000006C5000-memory.dmp

Filesize
2.8MB

Download
memory/316-63-0x0000000000400000-0x00000000006C5000-memory.dmp

Filesize
2.8MB

Download
memory/316-60-0x0000000000400000-0x00000000006C5000-memory.dmp

Filesize
2.8MB

Download
memory/916-81-0x0000000000400000-0x00000000006C5000-memory.dmp

Filesize
2.8MB

Download
memory/916-91-0x0000000000400000-0x00000000006C5000-memory.dmp

Filesize
2.8MB

Download
memory/916-128-0x0000000000400000-0x00000000006C5000-memory.dmp

Filesize
2.8MB

Download
memory/916-66-0x0000000000400000-0x00000000006C5000-memory.dmp

Filesize
2.8MB

Download
memory/916-125-0x0000000000400000-0x00000000006C5000-memory.dmp

Filesize
2.8MB

Download
memory/916-122-0x0000000000400000-0x00000000006C5000-memory.dmp

Filesize
2.8MB

Download
memory/916-69-0x0000000000400000-0x00000000006C5000-memory.dmp

Filesize
2.8MB

Download
memory/916-72-0x0000000000400000-0x00000000006C5000-memory.dmp

Filesize
2.8MB

Download
memory/916-75-0x0000000000400000-0x00000000006C5000-memory.dmp

Filesize
2.8MB

Download
memory/916-78-0x0000000000400000-0x00000000006C5000-memory.dmp

Filesize
2.8MB

Download
memory/916-119-0x0000000000400000-0x00000000006C5000-memory.dmp

Filesize
2.8MB

Download
memory/916-84-0x0000000000A10000-0x0000000000AB2000-memory.dmp

Filesize
648KB

Download
memory/916-86-0x0000000000400000-0x00000000006C5000-memory.dmp

Filesize
2.8MB

Download
memory/916-116-0x0000000000400000-0x00000000006C5000-memory.dmp

Filesize
2.8MB

Download
memory/916-94-0x0000000000400000-0x00000000006C5000-memory.dmp

Filesize
2.8MB

Download
memory/916-97-0x0000000000400000-0x00000000006C5000-memory.dmp

Filesize
2.8MB

Download
memory/916-100-0x0000000000400000-0x00000000006C5000-memory.dmp

Filesize
2.8MB

Download
memory/916-103-0x0000000000400000-0x00000000006C5000-memory.dmp

Filesize
2.8MB

Download
memory/916-106-0x0000000000400000-0x00000000006C5000-memory.dmp

Filesize
2.8MB

Download
memory/916-110-0x0000000000400000-0x00000000006C5000-memory.dmp

Filesize
2.8MB

Download
memory/916-113-0x0000000000400000-0x00000000006C5000-memory.dmp

Filesize
2.8MB

Download
memory/2468-16-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/2468-68-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3800-3-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/3800-67-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3800-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

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