nymaim | 952d69260bc696bf45afe1ee50a013fc3769979f80dcb00fabce439fbc3261b5

Analysis

max time kernel
136s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
04/10/2022, 03:23

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General

Target
file.exe
Size 352KB
Sample221004-dxhrqaafbm
SHA256 952d69260bc696bf45afe1ee50a013fc3769979f80dcb00fabce439fbc3261b5
MD5 034e4811c0deea46365ccf40af90e341
SHA1 eda3cbe5f287ff2c8f7105298827a1b45cc9d01b
SHA512 43b8ac8d80a837c992b21d8c5ef7385e4d4b11174033091b319b33add19bcbfa155e28c1913c45135374186ee008938858c001de79157bb3addf61481213a572
SSDEEP 6144:mYfrZqZRhxMaXgx7mwfsw8ecXNdifbuzbgwubwVf:mgroRVXgVmwfsecX7Kunn
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

nymaim trojan

Malware Config

Extracted

Family

nymaim

208.67.104.97
85.31.46.167

Signatures

NyMaim
NyMaim is a malware with various capabilities written in C++ and first seen in 2013.
trojan nymaim
Downloads MZ/PE file

Executes dropped EXE 1 IoCs

pid	Process
2828	Cleaner.exe

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-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	file.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

AutoIT Executable 2 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/files/0x0018000000022f71-139.dat	autoit_exe
behavioral2/files/0x0018000000022f71-140.dat	autoit_exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{16A25B95-BC27-4A77-9557-F66ECDE9F3C0}.catalogItem	svchost.exe
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{F56BC7A9-0873-4A34-A651-1E4EFBCCC31D}.catalogItem	svchost.exe

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

System Information Discovery
T1082

Program crash 12 IoCs

pid	pid_target	Process	procid_target
4376	3232	WerFault.exe	76
2156	3232	WerFault.exe	76
3096	3232	WerFault.exe	76
4684	3232	WerFault.exe	76
2552	3232	WerFault.exe	76
4496	3232	WerFault.exe	76
1420	3232	WerFault.exe	76
4224	3232	WerFault.exe	76
4916	3232	WerFault.exe	76
3780	3232	WerFault.exe	76
4076	3232	WerFault.exe	76
1660	3232	WerFault.exe	76

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	svchost.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	svchost.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	svchost.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
1108	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3232	file.exe
3232	file.exe
3232	file.exe
3232	file.exe
3232	file.exe
3232	file.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3232	file.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2828	Cleaner.exe
Token: SeDebugPrivilege	1108	taskkill.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 3232 wrote to memory of 4908	3232	file.exe	96
PID 3232 wrote to memory of 4908	3232	file.exe	96
PID 3232 wrote to memory of 4908	3232	file.exe	96
PID 4908 wrote to memory of 2828	4908	cmd.exe	98
PID 4908 wrote to memory of 2828	4908	cmd.exe	98
PID 3232 wrote to memory of 2084	3232	file.exe	122
PID 3232 wrote to memory of 2084	3232	file.exe	122
PID 3232 wrote to memory of 2084	3232	file.exe	122
PID 2084 wrote to memory of 1108	2084	cmd.exe	126
PID 2084 wrote to memory of 1108	2084	cmd.exe	126
PID 2084 wrote to memory of 1108	2084	cmd.exe	126

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:3232
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3232 -s 452
  2⤵
  - Program crash
  PID:4376
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3232 -s 764
  2⤵
  - Program crash
  PID:2156
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3232 -s 808
  2⤵
  - Program crash
  PID:3096
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3232 -s 828
  2⤵
  - Program crash
  PID:4684
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3232 -s 808
  2⤵
  - Program crash
  PID:2552
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3232 -s 932
  2⤵
  - Program crash
  PID:4496
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3232 -s 968
  2⤵
  - Program crash
  PID:1420
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3232 -s 1048
  2⤵
  - Program crash
  PID:4224
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3232 -s 1340
  2⤵
  - Program crash
  PID:4916
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c start /I "" "C:\Users\Admin\AppData\Local\Temp\cf3UrkvBh1s2GfdEoWJ\Cleaner.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4908
- - C:\Users\Admin\AppData\Local\Temp\cf3UrkvBh1s2GfdEoWJ\Cleaner.exe
    "C:\Users\Admin\AppData\Local\Temp\cf3UrkvBh1s2GfdEoWJ\Cleaner.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:2828
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3232 -s 1388
  2⤵
  - Program crash
  PID:3780
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3232 -s 1632
  2⤵
  - Program crash
  PID:4076
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "file.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\file.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2084
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1108
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3232 -s 520
  2⤵
  - Program crash
  PID:1660

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 3232 -ip 3232
1⤵
PID:3976

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 204 -p 3232 -ip 3232
1⤵
PID:900

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 3232 -ip 3232
1⤵
PID:4708

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 180 -p 3232 -ip 3232
1⤵
PID:3128

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 3232 -ip 3232
1⤵
PID:5068

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 3232 -ip 3232
1⤵
PID:2140

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 204 -p 3232 -ip 3232
1⤵
PID:4768

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 3232 -ip 3232
1⤵
PID:1316

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 3232 -ip 3232
1⤵
PID:5000

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k netsvcs -p
1⤵
- Drops file in System32 directory
- Checks processor information in registry
- Enumerates system info in registry
PID:4468

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 588 -p 3232 -ip 3232
1⤵
PID:4620

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 608 -p 3232 -ip 3232
1⤵
PID:1852

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 400 -p 3232 -ip 3232
1⤵
PID:3960

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Web Service

T1102

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

Bunifu_UI_v1.5.3.dll

Path C:\Users\Admin\AppData\Local\Temp\cf3UrkvBh1s2GfdEoWJ\Bunifu_UI_v1.5.3.dll
Size 236KB
SHA256 f1b3e0f2750a9103e46a6a4a34f1cf9d17779725f98042cc2475ec66484801cf
MD5 2ecb51ab00c5f340380ecf849291dbcf
SHA1 1a4dffbce2a4ce65495ed79eab42a4da3b660931
SHA512 e241a48eafcaf99187035f0870d24d74ae97fe84aaadd2591cceea9f64b8223d77cfb17a038a58eadd3b822c5201a6f7494f26eea6f77d95f77f6c668d088e6b
SSDEEP 6144:SIQpxILDXGGMO7Ice9C5kQw2hWHcHTykhb:SIQpxILDXGGlET9n/cHG
MD5 SHA1 SHA512 SSDEEP

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Cleaner.exe

Path C:\Users\Admin\AppData\Local\Temp\cf3UrkvBh1s2GfdEoWJ\Cleaner.exe
Size 3.8MB
SHA256 c394b068aa87264419f60838a8812b750e67cf93f2494c62b9078c3708072568
MD5 04514bd4962f7d60679434e0ebe49184
SHA1 1493a5447eb8156a7d7aecff60ee8bfba2209526
SHA512 a71c7ed5dfdda22f095dc99b16e8342a42e3361be16e0241dbf8983dd0d5f6e90eb0299aac1815cf78ad3a9f15fa89b42b720b7f818ee5f502300f102ef4c93e
SSDEEP 49152:+/PD/DL/D9CuZrr2h60qPPB+lJJkF9IC966eB+lJJkF9IC966eB+lJJkF9IC966h:+3D///UUrP43m8C/3m8C/3m8C5
MD5 SHA1 SHA512 SSDEEP

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Cleaner.exe

Path C:\Users\Admin\AppData\Local\Temp\cf3UrkvBh1s2GfdEoWJ\Cleaner.exe
Size 3.8MB
SHA256 c394b068aa87264419f60838a8812b750e67cf93f2494c62b9078c3708072568
MD5 04514bd4962f7d60679434e0ebe49184
SHA1 1493a5447eb8156a7d7aecff60ee8bfba2209526
SHA512 a71c7ed5dfdda22f095dc99b16e8342a42e3361be16e0241dbf8983dd0d5f6e90eb0299aac1815cf78ad3a9f15fa89b42b720b7f818ee5f502300f102ef4c93e
SSDEEP 49152:+/PD/DL/D9CuZrr2h60qPPB+lJJkF9IC966eB+lJJkF9IC966eB+lJJkF9IC966h:+3D///UUrP43m8C/3m8C/3m8C5
MD5 SHA1 SHA512 SSDEEP

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memory/2828-144-0x0000017DAE3C0000-0x0000017DAE402000-memory.dmp

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memory/2828-142-0x00007FFD6C7C0000-0x00007FFD6D281000-memory.dmp

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memory/2828-145-0x00007FFD6C7C0000-0x00007FFD6D281000-memory.dmp

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memory/2828-141-0x0000017D92F20000-0x0000017D93076000-memory.dmp

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memory/3232-132-0x000000000065C000-0x0000000000682000-memory.dmp

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memory/3232-135-0x000000000065C000-0x0000000000682000-memory.dmp

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memory/3232-136-0x0000000000400000-0x000000000045D000-memory.dmp

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memory/3232-146-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/3232-134-0x0000000000400000-0x000000000045D000-memory.dmp

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memory/3232-133-0x00000000005D0000-0x000000000060F000-memory.dmp

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memory/3232-152-0x000000000065C000-0x0000000000682000-memory.dmp

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memory/3232-153-0x0000000000400000-0x000000000045D000-memory.dmp

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