gcleaner | bba9ef718db5388cef26ecba094ce56e0f4e064578420273849aaaecb9817506

General

Target

bba9ef718db5388cef26ecba094ce56e0f4e064578420273849aaaecb9817506.exe
Size

396KB
MD5

0f33ff53b9210572cafe2be67271299e
SHA1

70ce382525aa4945ee39c1b515b607ff520888ac
SHA256

bba9ef718db5388cef26ecba094ce56e0f4e064578420273849aaaecb9817506
SHA512

e06a92df15453937b7215f56570d0c205c757f7cee511c62f817e22f30652c45b27d0796ec03b3eea8717b51c3bdd00293cdceddaf895507dc112a7f43362997
SSDEEP

6144:bNJOpHTb4G1hjMknKLOur6b7eviBrp12KsCqln5eOlK8:b/OpHTkG1hjrKLuaq12KalQcK8

Score

10^/10

gcleaner discovery loader

Malware Config

Extracted

Family

gcleaner

C2

80.66.75.114

45.91.200.135

Signatures

GCleaner
GCleaner is a Pay-Per-Install malware loader first discovered in early 2019.
loader gcleaner
Downloads MZ/PE file

Checks computer location settings 2 TTPs 1 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-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation	bba9ef718db5388cef26ecba094ce56e0f4e064578420273849aaaecb9817506.exe

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

System Information Discovery
T1082

Program crash 10 IoCs

pid	pid_target	Process	procid_target
3980	3352	WerFault.exe	81
5116	3352	WerFault.exe	81
228	3352	WerFault.exe	81
1692	3352	WerFault.exe	81
4596	3352	WerFault.exe	81
2800	3352	WerFault.exe	81
264	3352	WerFault.exe	81
2260	3352	WerFault.exe	81
2796	3352	WerFault.exe	81
3540	3352	WerFault.exe	81

System Location Discovery: System Language Discovery 1 TTPs 3 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	bba9ef718db5388cef26ecba094ce56e0f4e064578420273849aaaecb9817506.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	taskkill.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
2084	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2084	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3352 wrote to memory of 1972	3352	bba9ef718db5388cef26ecba094ce56e0f4e064578420273849aaaecb9817506.exe	109
PID 3352 wrote to memory of 1972	3352	bba9ef718db5388cef26ecba094ce56e0f4e064578420273849aaaecb9817506.exe	109
PID 3352 wrote to memory of 1972	3352	bba9ef718db5388cef26ecba094ce56e0f4e064578420273849aaaecb9817506.exe	109
PID 1972 wrote to memory of 2084	1972	cmd.exe	114
PID 1972 wrote to memory of 2084	1972	cmd.exe	114
PID 1972 wrote to memory of 2084	1972	cmd.exe	114

C:\Users\Admin\AppData\Local\Temp\bba9ef718db5388cef26ecba094ce56e0f4e064578420273849aaaecb9817506.exe
"C:\Users\Admin\AppData\Local\Temp\bba9ef718db5388cef26ecba094ce56e0f4e064578420273849aaaecb9817506.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3352
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3352 -s 444
  2⤵
  - Program crash
  PID:3980
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3352 -s 768
  2⤵
  - Program crash
  PID:5116
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3352 -s 808
  2⤵
  - Program crash
  PID:228
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3352 -s 808
  2⤵
  - Program crash
  PID:1692
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3352 -s 840
  2⤵
  - Program crash
  PID:4596
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3352 -s 928
  2⤵
  - Program crash
  PID:2800
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3352 -s 1004
  2⤵
  - Program crash
  PID:264
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3352 -s 1112
  2⤵
  - Program crash
  PID:2260
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3352 -s 1644
  2⤵
  - Program crash
  PID:2796
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "bba9ef718db5388cef26ecba094ce56e0f4e064578420273849aaaecb9817506.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\bba9ef718db5388cef26ecba094ce56e0f4e064578420273849aaaecb9817506.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1972
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "bba9ef718db5388cef26ecba094ce56e0f4e064578420273849aaaecb9817506.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2084
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3352 -s 1696
  2⤵
  - Program crash
  PID:3540

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 3352 -ip 3352
1⤵
PID:2132

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 188 -p 3352 -ip 3352
1⤵
PID:4980

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 372 -p 3352 -ip 3352
1⤵
PID:2716

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 188 -p 3352 -ip 3352
1⤵
PID:4536

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 368 -p 3352 -ip 3352
1⤵
PID:2532

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 3352 -ip 3352
1⤵
PID:1336

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 3352 -ip 3352
1⤵
PID:4904

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 3352 -ip 3352
1⤵
PID:5100

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 3352 -ip 3352
1⤵
PID:4064

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 188 -p 3352 -ip 3352
1⤵
PID:2888

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

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\Microsoft\Windows\INetCache\IE\68XY2BI1\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/3352-1-0x00000000026C0000-0x00000000027C0000-memory.dmp

Filesize
1024KB

Download
memory/3352-2-0x00000000041C0000-0x00000000041FB000-memory.dmp

Filesize
236KB

Download
memory/3352-3-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/3352-8-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/3352-13-0x00000000026C0000-0x00000000027C0000-memory.dmp

Filesize
1024KB

Download
memory/3352-16-0x00000000041C0000-0x00000000041FB000-memory.dmp

Filesize
236KB

Download
memory/3352-15-0x0000000000400000-0x000000000247B000-memory.dmp

Filesize
32.5MB

Download
memory/3352-17-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/3352-29-0x0000000000400000-0x000000000247B000-memory.dmp

Filesize
32.5MB

Download
memory/3352-36-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/3352-35-0x0000000000400000-0x000000000247B000-memory.dmp

Filesize
32.5MB

Download

Analysis

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