20a7adf26b1d0cf65661cfbfa94dd2246f2fb34963ea689b83b4c32af2d810a3

Analysis

max time kernel
83s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
19-09-2022 00:59

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General

Target

20a7adf26b1d0cf65661cfbfa94dd2246f2fb34963ea689b83b4c32af2d810a3.exe
Size

54KB
MD5

e244f6cdbcab13e32434cfcb888ce124
SHA1

1b38c2c603b2d0a93636d1f7ea8d3b7c7cc708c6
SHA256

20a7adf26b1d0cf65661cfbfa94dd2246f2fb34963ea689b83b4c32af2d810a3
SHA512

8de5caa965c1cd27fb9245dbb9869ee7fac8c3dee964c56304478feed5c2674369da5bd4bcaeb87882d1bc0db26981d4621ddbcef9d211931fa04fa2d27abfdf
SSDEEP

768:NrpGUKbGPhgSRA99jfeXZ8veIJCsS2+AvnbcuyD7UMo:NLbRATzeXZ8GIZScvnouy8Mo

Score

8^/10

evasion persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2224	coiome.exe

Stops running service(s) 3 TTPs
evasion

Modify Existing Service
T1031

Impair Defenses
T1562

Service Stop
T1489

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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	20a7adf26b1d0cf65661cfbfa94dd2246f2fb34963ea689b83b4c32af2d810a3.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	mshta.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\safe360 = "C:\\Program Files\\Common Files\\sfbsbvx\\coiome.exe"	mshta.exe

Drops file in Program Files directory 5 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\GRO.hta	20a7adf26b1d0cf65661cfbfa94dd2246f2fb34963ea689b83b4c32af2d810a3.exe
File created	C:\Program Files (x86)\Common Files\sfbsbvx\coiome.exe	20a7adf26b1d0cf65661cfbfa94dd2246f2fb34963ea689b83b4c32af2d810a3.exe
File opened for modification	C:\Program Files (x86)\Common Files\sfbsbvx\coiome.exe	20a7adf26b1d0cf65661cfbfa94dd2246f2fb34963ea689b83b4c32af2d810a3.exe
File opened for modification	C:\Program Files (x86)\Common Files\sfbsbvx	coiome.exe
File opened for modification	C:\Program Files (x86)\Common Files\sfbsbvx	20a7adf26b1d0cf65661cfbfa94dd2246f2fb34963ea689b83b4c32af2d810a3.exe

Launches sc.exe 1 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
3432	sc.exe

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

System Information Discovery
T1082

Kills process with taskkill 1 IoCs

evasion

pid	Process
4632	taskkill.exe

Modifies Internet Explorer settings 1 TTPs 3 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Internet Explorer\Main	mshta.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Search Page = "http://www.52cailing.com"	mshta.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Main\default_page_url = "http://www.52cailing.com"	mshta.exe

Modifies Internet Explorer start page 1 TTPs 1 IoCs

stealer

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Start Page = "http://www.52cailing.com"	mshta.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000_Classes\Local Settings	20a7adf26b1d0cf65661cfbfa94dd2246f2fb34963ea689b83b4c32af2d810a3.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4940	20a7adf26b1d0cf65661cfbfa94dd2246f2fb34963ea689b83b4c32af2d810a3.exe
Token: SeDebugPrivilege	4632	taskkill.exe
Token: SeDebugPrivilege	2224	coiome.exe

Suspicious use of WriteProcessMemory 42 IoCs

description	pid	Process	procid_target
PID 4940 wrote to memory of 2060	4940	20a7adf26b1d0cf65661cfbfa94dd2246f2fb34963ea689b83b4c32af2d810a3.exe	82
PID 4940 wrote to memory of 2060	4940	20a7adf26b1d0cf65661cfbfa94dd2246f2fb34963ea689b83b4c32af2d810a3.exe	82
PID 4940 wrote to memory of 2060	4940	20a7adf26b1d0cf65661cfbfa94dd2246f2fb34963ea689b83b4c32af2d810a3.exe	82
PID 4940 wrote to memory of 1624	4940	20a7adf26b1d0cf65661cfbfa94dd2246f2fb34963ea689b83b4c32af2d810a3.exe	84
PID 4940 wrote to memory of 1624	4940	20a7adf26b1d0cf65661cfbfa94dd2246f2fb34963ea689b83b4c32af2d810a3.exe	84
PID 4940 wrote to memory of 1624	4940	20a7adf26b1d0cf65661cfbfa94dd2246f2fb34963ea689b83b4c32af2d810a3.exe	84
PID 1624 wrote to memory of 4632	1624	cmd.exe	87
PID 1624 wrote to memory of 4632	1624	cmd.exe	87
PID 1624 wrote to memory of 4632	1624	cmd.exe	87
PID 4940 wrote to memory of 2224	4940	20a7adf26b1d0cf65661cfbfa94dd2246f2fb34963ea689b83b4c32af2d810a3.exe	88
PID 4940 wrote to memory of 2224	4940	20a7adf26b1d0cf65661cfbfa94dd2246f2fb34963ea689b83b4c32af2d810a3.exe	88
PID 4940 wrote to memory of 2224	4940	20a7adf26b1d0cf65661cfbfa94dd2246f2fb34963ea689b83b4c32af2d810a3.exe	88
PID 4940 wrote to memory of 3156	4940	20a7adf26b1d0cf65661cfbfa94dd2246f2fb34963ea689b83b4c32af2d810a3.exe	89
PID 4940 wrote to memory of 3156	4940	20a7adf26b1d0cf65661cfbfa94dd2246f2fb34963ea689b83b4c32af2d810a3.exe	89
PID 4940 wrote to memory of 3156	4940	20a7adf26b1d0cf65661cfbfa94dd2246f2fb34963ea689b83b4c32af2d810a3.exe	89
PID 2224 wrote to memory of 4032	2224	coiome.exe	91
PID 2224 wrote to memory of 4032	2224	coiome.exe	91
PID 2224 wrote to memory of 4032	2224	coiome.exe	91
PID 4032 wrote to memory of 3432	4032	cmd.exe	93
PID 4032 wrote to memory of 3432	4032	cmd.exe	93
PID 4032 wrote to memory of 3432	4032	cmd.exe	93
PID 2224 wrote to memory of 1756	2224	coiome.exe	94
PID 2224 wrote to memory of 1756	2224	coiome.exe	94
PID 2224 wrote to memory of 1756	2224	coiome.exe	94
PID 1756 wrote to memory of 1780	1756	cmd.exe	97
PID 1756 wrote to memory of 1780	1756	cmd.exe	97
PID 1756 wrote to memory of 1780	1756	cmd.exe	97
PID 2224 wrote to memory of 1380	2224	coiome.exe	98
PID 2224 wrote to memory of 1380	2224	coiome.exe	98
PID 2224 wrote to memory of 1380	2224	coiome.exe	98
PID 1380 wrote to memory of 1608	1380	cmd.exe	100
PID 1380 wrote to memory of 1608	1380	cmd.exe	100
PID 1380 wrote to memory of 1608	1380	cmd.exe	100
PID 2224 wrote to memory of 4416	2224	coiome.exe	101
PID 2224 wrote to memory of 4416	2224	coiome.exe	101
PID 2224 wrote to memory of 4416	2224	coiome.exe	101
PID 2224 wrote to memory of 3188	2224	coiome.exe	103
PID 2224 wrote to memory of 3188	2224	coiome.exe	103
PID 2224 wrote to memory of 3188	2224	coiome.exe	103
PID 2224 wrote to memory of 3496	2224	coiome.exe	105
PID 2224 wrote to memory of 3496	2224	coiome.exe	105
PID 2224 wrote to memory of 3496	2224	coiome.exe	105

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
1608	attrib.exe
1780	attrib.exe

C:\Users\Admin\AppData\Local\Temp\20a7adf26b1d0cf65661cfbfa94dd2246f2fb34963ea689b83b4c32af2d810a3.exe
"C:\Users\Admin\AppData\Local\Temp\20a7adf26b1d0cf65661cfbfa94dd2246f2fb34963ea689b83b4c32af2d810a3.exe"
1⤵
- Checks computer location settings
- Drops file in Program Files directory
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4940
- C:\Windows\SysWOW64\mshta.exe
  "C:\Windows\SysWOW64\mshta.exe" "C:\Program Files (x86)\GRO.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}
  2⤵
  - Adds Run key to start application
  - Modifies Internet Explorer settings
  - Modifies Internet Explorer start page
  PID:2060
- C:\Windows\SysWOW64\cmd.exe
  cmd /c taskkill /im coiome.exe /f
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1624
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im coiome.exe /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4632
- C:\Program Files (x86)\Common Files\sfbsbvx\coiome.exe
  "C:\Program Files (x86)\Common Files\sfbsbvx\coiome.exe"
  2⤵
  - Executes dropped EXE
  - Drops file in Program Files directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2224
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c sc delete JavaServe
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4032
  - - C:\Windows\SysWOW64\sc.exe
      sc delete JavaServe
      4⤵
      Launches sc.exe
      PID:3432
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c attrib -h -s -r -a "%userprofile%\Cookies\*.*"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1756
  - - C:\Windows\SysWOW64\attrib.exe
      attrib -h -s -r -a "C:\Users\Admin\Cookies\*.*"
      4⤵
      Views/modifies file attributes
      PID:1780
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c attrib -h -s -r -a "%userprofile%\Local Settings\Temp\Cookies\*.*"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1380
  - - C:\Windows\SysWOW64\attrib.exe
      attrib -h -s -r -a "C:\Users\Admin\Local Settings\Temp\Cookies\*.*"
      4⤵
      Views/modifies file attributes
      PID:1608
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c del /f /s /q "%userprofile%\Cookies\*.*
    3⤵
    PID:4416
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c del /f /s /q "%userprofile%\Local Settings\Temporary Internet Files\*.*"
    3⤵
    PID:3188
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c del /f /s /q "%userprofile%\Local Settings\Temp\Cookies\*.*"
    3⤵
    PID:3496
- C:\Windows\SysWOW64\cmd.exe
  cmd /c del "C:\Users\Admin\AppData\Local\Temp\20a7adf26b1d0cf65661cfbfa94dd2246f2fb34963ea689b83b4c32af2d810a3.exe"
  2⤵
  PID:3156

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

T1158

Modify Existing Service

T1031

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Hidden Files and Directories

T1158

Impair Defenses

T1562

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Service Stop

T1489

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Downloads

C:\Program Files (x86)\Common Files\sfbsbvx\coiome.exe

Filesize
12.1MB

MD5
54f5c675444a775add629f1c005851ee

SHA1
23d24a6766e6e5aeaa8c6c39c827839fe332d03d

SHA256
07ee3328d37f0248c66e18a444826504fced522efcd3a992406ff9b01166ab2b

SHA512
bded0263d0d94bf04fae7d5d926132f6f26835b47daf9603b4edaf452ec7e9fe3cc2de472881098fe60bddce56009d5e5714f16349c031775483a014ce31282d

Download Submit
C:\Program Files (x86)\Common Files\sfbsbvx\coiome.exe

Filesize
12.1MB

MD5
54f5c675444a775add629f1c005851ee

SHA1
23d24a6766e6e5aeaa8c6c39c827839fe332d03d

SHA256
07ee3328d37f0248c66e18a444826504fced522efcd3a992406ff9b01166ab2b

SHA512
bded0263d0d94bf04fae7d5d926132f6f26835b47daf9603b4edaf452ec7e9fe3cc2de472881098fe60bddce56009d5e5714f16349c031775483a014ce31282d

Download Submit
C:\Program Files (x86)\GRO.hta

Filesize
780B

MD5
cfae0efb683986503bb789616bad8b55

SHA1
9325f503e9c4d97a7d06d81859f73d245a974753

SHA256
8f1076023a3e05a05e9938b08398e885a516f7442a19cd0de7fd3a87f6c0ccd8

SHA512
e338c41006f670cc98554f1c3a262cc7e4d9dd680bd9d77cc2b5a048a7f3b630f59df6a02fe6542df71647ce3eb7541f86bc3266fad396a9859620a7d26a942c

Download Submit
memory/1380-148-0x0000000000000000-mapping.dmp

Download
memory/1608-149-0x0000000000000000-mapping.dmp

Download
memory/1624-135-0x0000000000000000-mapping.dmp

Download
memory/1756-146-0x0000000000000000-mapping.dmp

Download
memory/1780-147-0x0000000000000000-mapping.dmp

Download
memory/2060-133-0x0000000000000000-mapping.dmp

Download
memory/2224-138-0x0000000000000000-mapping.dmp

Download
memory/2224-141-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/2224-143-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/3156-142-0x0000000000000000-mapping.dmp

Download
memory/3188-151-0x0000000000000000-mapping.dmp

Download
memory/3432-145-0x0000000000000000-mapping.dmp

Download
memory/3496-152-0x0000000000000000-mapping.dmp

Download
memory/4032-144-0x0000000000000000-mapping.dmp

Download
memory/4416-150-0x0000000000000000-mapping.dmp

Download
memory/4632-136-0x0000000000000000-mapping.dmp

Download
memory/4940-132-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download
memory/4940-137-0x0000000000400000-0x000000000040F000-memory.dmp

Filesize
60KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads