gcleaner | b5aa79176608e720e13929625256b2c78692d178ceb596568fde11aefda566ff

General

Target

b5aa79176608e720e13929625256b2c78692d178ceb596568fde11aefda566ff.exe
Size

367KB
MD5

bff6423740c8b46aab327108a05c2753
SHA1

167b1a96867aadfaee6093d89dcdf095745339c6
SHA256

b5aa79176608e720e13929625256b2c78692d178ceb596568fde11aefda566ff
SHA512

b24ca5f68c96543e41f02566cc8e826cf4d756cbcf896947cf47dd4d5841ec50f760c3962a80f96de3826988c14ec274a9c021b22ecbc37ce0bc1f36cd16c452
SSDEEP

3072:1LjTho9/yTx0aB2LkTkLta8GRpd7hSGnAmt3bUFLsVR/p9pGu5cyIlU0:1LjThwQxZ2Lkg5mrNSUq+p96s

Score

10^/10

gcleaner loader

Malware Config

Extracted

Family

gcleaner

C2

185.172.128.90

5.42.64.56

185.172.128.69

Signatures

GCleaner
GCleaner is a Pay-Per-Install malware loader first discovered in early 2019.
loader gcleaner

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-1-5-21-3571316656-3665257725-2415531812-1000\Control Panel\International\Geo\Nation	b5aa79176608e720e13929625256b2c78692d178ceb596568fde11aefda566ff.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
1524	1840	WerFault.exe	81
2064	1840	WerFault.exe	81
2360	1840	WerFault.exe	81
3572	1840	WerFault.exe	81
3084	1840	WerFault.exe	81
228	1840	WerFault.exe	81
4108	1840	WerFault.exe	81
1856	1840	WerFault.exe	81
2600	1840	WerFault.exe	81
3688	1840	WerFault.exe	81

Kills process with taskkill 1 IoCs

evasion

pid	Process
388	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	388	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1840 wrote to memory of 2500	1840	b5aa79176608e720e13929625256b2c78692d178ceb596568fde11aefda566ff.exe	110
PID 1840 wrote to memory of 2500	1840	b5aa79176608e720e13929625256b2c78692d178ceb596568fde11aefda566ff.exe	110
PID 1840 wrote to memory of 2500	1840	b5aa79176608e720e13929625256b2c78692d178ceb596568fde11aefda566ff.exe	110
PID 2500 wrote to memory of 388	2500	cmd.exe	114
PID 2500 wrote to memory of 388	2500	cmd.exe	114
PID 2500 wrote to memory of 388	2500	cmd.exe	114

C:\Users\Admin\AppData\Local\Temp\b5aa79176608e720e13929625256b2c78692d178ceb596568fde11aefda566ff.exe
"C:\Users\Admin\AppData\Local\Temp\b5aa79176608e720e13929625256b2c78692d178ceb596568fde11aefda566ff.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1840
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1840 -s 452
  2⤵
  - Program crash
  PID:1524
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1840 -s 764
  2⤵
  - Program crash
  PID:2064
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1840 -s 772
  2⤵
  - Program crash
  PID:2360
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1840 -s 772
  2⤵
  - Program crash
  PID:3572
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1840 -s 784
  2⤵
  - Program crash
  PID:3084
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1840 -s 936
  2⤵
  - Program crash
  PID:228
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1840 -s 1004
  2⤵
  - Program crash
  PID:4108
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1840 -s 1096
  2⤵
  - Program crash
  PID:1856
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1840 -s 1376
  2⤵
  - Program crash
  PID:2600
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "b5aa79176608e720e13929625256b2c78692d178ceb596568fde11aefda566ff.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\b5aa79176608e720e13929625256b2c78692d178ceb596568fde11aefda566ff.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2500
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "b5aa79176608e720e13929625256b2c78692d178ceb596568fde11aefda566ff.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:388
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1840 -s 508
  2⤵
  - Program crash
  PID:3688

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1840 -ip 1840
1⤵
PID:1560

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 1840 -ip 1840
1⤵
PID:5032

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 1840 -ip 1840
1⤵
PID:2820

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 1840 -ip 1840
1⤵
PID:1760

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 1840 -ip 1840
1⤵
PID:3412

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 1840 -ip 1840
1⤵
PID:4364

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 1840 -ip 1840
1⤵
PID:220

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 1840 -ip 1840
1⤵
PID:4332

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 1840 -ip 1840
1⤵
PID:1440

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 1840 -ip 1840
1⤵
PID:396

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1840-2-0x0000000002240000-0x000000000227C000-memory.dmp

Filesize
240KB

Download
memory/1840-1-0x00000000020C0000-0x00000000021C0000-memory.dmp

Filesize
1024KB

Download
memory/1840-3-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1840-8-0x0000000002240000-0x000000000227C000-memory.dmp

Filesize
240KB

Download
memory/1840-7-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1840-6-0x0000000000400000-0x0000000001FA7000-memory.dmp

Filesize
27.7MB

Download

Analysis

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