gcleaner | dd116354036dca800f4b1be5fde7e338b6d647b468323d3df828a7180e110d96

General

Target

univ.exe
Size

447KB
MD5

877578aa859949f65846c834ce2740a1
SHA1

948c5764c2f4edae98c162cae1fc9839a9f2e1f2
SHA256

dd116354036dca800f4b1be5fde7e338b6d647b468323d3df828a7180e110d96
SHA512

07d1cbbe9b4bb338c961af05d5f6791e8f94d06aff642728a091f059e248e7f4f0e096d1b49c6f4a59ff063246fc61083a2b097132516bcf752d9822dd90335e
SSDEEP

6144:zELuwysoySGLobNl2kVJIkGd6tWqnb0FyggNifGi/1oD5zlW5FXCnFk:zszysoydLobZVJIkGdSwyNMS5hoSC

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-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	univ.exe

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

System Information Discovery
T1082

Program crash 9 IoCs

pid	pid_target	Process	procid_target
3336	2700	WerFault.exe	82
2636	2700	WerFault.exe	82
3296	2700	WerFault.exe	82
3512	2700	WerFault.exe	82
636	2700	WerFault.exe	82
1116	2700	WerFault.exe	82
1816	2700	WerFault.exe	82
2328	2700	WerFault.exe	82
4220	2700	WerFault.exe	82

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	univ.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
3492	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3492	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2700 wrote to memory of 2500	2700	univ.exe	108
PID 2700 wrote to memory of 2500	2700	univ.exe	108
PID 2700 wrote to memory of 2500	2700	univ.exe	108
PID 2500 wrote to memory of 3492	2500	cmd.exe	112
PID 2500 wrote to memory of 3492	2500	cmd.exe	112
PID 2500 wrote to memory of 3492	2500	cmd.exe	112

C:\Users\Admin\AppData\Local\Temp\univ.exe
"C:\Users\Admin\AppData\Local\Temp\univ.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2700
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2700 -s 456
  2⤵
  - Program crash
  PID:3336
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2700 -s 768
  2⤵
  - Program crash
  PID:2636
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2700 -s 788
  2⤵
  - Program crash
  PID:3296
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2700 -s 828
  2⤵
  - Program crash
  PID:3512
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2700 -s 788
  2⤵
  - Program crash
  PID:636
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2700 -s 928
  2⤵
  - Program crash
  PID:1116
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2700 -s 928
  2⤵
  - Program crash
  PID:1816
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2700 -s 1580
  2⤵
  - Program crash
  PID:2328
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "univ.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\univ.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2500
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "univ.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3492
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2700 -s 1608
  2⤵
  - Program crash
  PID:4220

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 2700 -ip 2700
1⤵
PID:3332

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 2700 -ip 2700
1⤵
PID:4252

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 568 -p 2700 -ip 2700
1⤵
PID:1800

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 2700 -ip 2700
1⤵
PID:3208

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 2700 -ip 2700
1⤵
PID:1652

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 572 -p 2700 -ip 2700
1⤵
PID:3564

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 2700 -ip 2700
1⤵
PID:4708

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 208 -p 2700 -ip 2700
1⤵
PID:4636

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 2700 -ip 2700
1⤵
PID:1052

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\KDOTUZKP\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/2700-1-0x00000000025D0000-0x00000000026D0000-memory.dmp

Filesize
1024KB

Download
memory/2700-2-0x00000000041F0000-0x000000000422B000-memory.dmp

Filesize
236KB

Download
memory/2700-3-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/2700-8-0x0000000010000000-0x000000001001C000-memory.dmp

Filesize
112KB

Download
memory/2700-13-0x00000000025D0000-0x00000000026D0000-memory.dmp

Filesize
1024KB

Download
memory/2700-16-0x00000000041F0000-0x000000000422B000-memory.dmp

Filesize
236KB

Download
memory/2700-15-0x0000000000400000-0x0000000002488000-memory.dmp

Filesize
32.5MB

Download
memory/2700-17-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/2700-29-0x0000000000400000-0x0000000002488000-memory.dmp

Filesize
32.5MB

Download
memory/2700-36-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/2700-35-0x0000000000400000-0x0000000002488000-memory.dmp

Filesize
32.5MB

Download

Analysis

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