nymaim | d229f2520f6ed70a022a6333483e844c35d792744a883fde05f03dd2a3fd7420

Analysis

max time kernel
57s
max time network
60s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
12-01-2023 18:01

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General

Target

file.exe
Size

1.5MB
MD5

495ec9f487ebdac52568aa394f1db615
SHA1

3893a7d5f9f91b9f2b2a3d7bbb5483c9ae5b385a
SHA256

d229f2520f6ed70a022a6333483e844c35d792744a883fde05f03dd2a3fd7420
SHA512

d7b7ee9da30fb52082f453156aec3932cbf40604fd6e4b5bc8a5458d731685a841674b784fd4957b9eed8d3159534585ae8234a9fb36d9cf06d34f2ac1e29de5
SSDEEP

24576:220Sx+J5xUVuvxlj4J6DPZwVA3OQVFgcfsNfkhUyFtc/7Zf+BXMgXC75ld1qSVpk:228wubE6uBQVtfsN0R+/tOEd1qapk

Score

10^/10

nymaim discovery trojan

Malware Config

Extracted

Family

nymaim

45.139.105.171

85.31.46.167

Signatures

NyMaim
NyMaim is a malware with various capabilities written in C++ and first seen in 2013.
trojan nymaim
Executes dropped EXE 3 IoCs

Processes:

file.tmpMitFiles138.exeI7CMsVf.exe

pid process

936 file.tmp
1608 MitFiles138.exe
628 I7CMsVf.exe
Loads dropped DLL 6 IoCs

Processes:

file.exefile.tmpMitFiles138.exe

pid process

828 file.exe
936 file.tmp
936 file.tmp
936 file.tmp
936 file.tmp
1608 MitFiles138.exe
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

pid	process
936	file.tmp
1608	MitFiles138.exe
628	I7CMsVf.exe

pid	process
828	file.exe
936	file.tmp
936	file.tmp
936	file.tmp
936	file.tmp
1608	MitFiles138.exe

Drops file in Program Files directory 17 IoCs

Processes:

file.tmp

description	ioc	process
File created	C:\Program Files (x86)\Mit Files\is-H7C4B.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-9AEPH.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-D1QGB.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-45GNG.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-7GQIK.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-8BB00.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-KKCVR.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-V5UQK.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\unins000.dat	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-9E1E5.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-CJQ8F.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\Mit Files\unins000.dat	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-NQT7P.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-HFPN6.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\Mit Files\MitFiles138.exe	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-50VHG.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-IRTBL.tmp	file.tmp

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

Processes:

taskkill.exe

pid process

1764 taskkill.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

MitFiles138.exe

pid process

1608 MitFiles138.exe
1608 MitFiles138.exe
1608 MitFiles138.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 1764 taskkill.exe

pid	process
1764	taskkill.exe

pid	process
1608	MitFiles138.exe
1608	MitFiles138.exe
1608	MitFiles138.exe

description	pid	process
Token: SeDebugPrivilege	1764	taskkill.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

file.exefile.tmpMitFiles138.execmd.exe

description	pid	process	target process
PID 828 wrote to memory of 936	828	file.exe	file.tmp
PID 828 wrote to memory of 936	828	file.exe	file.tmp
PID 828 wrote to memory of 936	828	file.exe	file.tmp
PID 828 wrote to memory of 936	828	file.exe	file.tmp
PID 828 wrote to memory of 936	828	file.exe	file.tmp
PID 828 wrote to memory of 936	828	file.exe	file.tmp
PID 828 wrote to memory of 936	828	file.exe	file.tmp
PID 936 wrote to memory of 1608	936	file.tmp	MitFiles138.exe
PID 936 wrote to memory of 1608	936	file.tmp	MitFiles138.exe
PID 936 wrote to memory of 1608	936	file.tmp	MitFiles138.exe
PID 936 wrote to memory of 1608	936	file.tmp	MitFiles138.exe
PID 1608 wrote to memory of 628	1608	MitFiles138.exe	I7CMsVf.exe
PID 1608 wrote to memory of 628	1608	MitFiles138.exe	I7CMsVf.exe
PID 1608 wrote to memory of 628	1608	MitFiles138.exe	I7CMsVf.exe
PID 1608 wrote to memory of 628	1608	MitFiles138.exe	I7CMsVf.exe
PID 1608 wrote to memory of 2036	1608	MitFiles138.exe	cmd.exe
PID 1608 wrote to memory of 2036	1608	MitFiles138.exe	cmd.exe
PID 1608 wrote to memory of 2036	1608	MitFiles138.exe	cmd.exe
PID 1608 wrote to memory of 2036	1608	MitFiles138.exe	cmd.exe
PID 2036 wrote to memory of 1764	2036	cmd.exe	taskkill.exe
PID 2036 wrote to memory of 1764	2036	cmd.exe	taskkill.exe
PID 2036 wrote to memory of 1764	2036	cmd.exe	taskkill.exe
PID 2036 wrote to memory of 1764	2036	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:828
- C:\Users\Admin\AppData\Local\Temp\is-2T0QD.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-2T0QD.tmp\file.tmp" /SL5="$70124,1327259,483328,C:\Users\Admin\AppData\Local\Temp\file.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:936
- - C:\Program Files (x86)\Mit Files\MitFiles138.exe
    "C:\Program Files (x86)\Mit Files\MitFiles138.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:1608
  - - C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\I7CMsVf.exe
      4⤵
      Executes dropped EXE
      PID:628
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "MitFiles138.exe" /f & erase "C:\Program Files (x86)\Mit Files\MitFiles138.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2036
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "MitFiles138.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:1764

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\Mit Files\MitFiles138.exe

Filesize
1.8MB

MD5
09804fcb1250801bc1b972cf332d3e87

SHA1
1a9d8700bf70bba22f2e205be85190aa3bac384c

SHA256
cd1a1565e5982b978418ea27eb572c157a0bdc896eca5664f8d093610e419645

SHA512
4ac5eb09fce9567329cd91afcedffb101debb369505799278877991a620edfdaefdf8f1ebce73c5c4ca1cd3d2f1f4331dae77eaf93a8e7b1c005c56ee4e710ed

Download Submit
C:\Program Files (x86)\Mit Files\MitFiles138.exe

Filesize
1.8MB

MD5
09804fcb1250801bc1b972cf332d3e87

SHA1
1a9d8700bf70bba22f2e205be85190aa3bac384c

SHA256
cd1a1565e5982b978418ea27eb572c157a0bdc896eca5664f8d093610e419645

SHA512
4ac5eb09fce9567329cd91afcedffb101debb369505799278877991a620edfdaefdf8f1ebce73c5c4ca1cd3d2f1f4331dae77eaf93a8e7b1c005c56ee4e710ed

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-2T0QD.tmp\file.tmp

Filesize
695KB

MD5
415533bb40980951c966665cff9e2fe7

SHA1
fce396c8fa01876dd008f22c8be9a9b706f4aaec

SHA256
f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734

SHA512
3a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-2T0QD.tmp\file.tmp

Filesize
695KB

MD5
415533bb40980951c966665cff9e2fe7

SHA1
fce396c8fa01876dd008f22c8be9a9b706f4aaec

SHA256
f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734

SHA512
3a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae

Download Submit
C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\I7CMsVf.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
\Program Files (x86)\Mit Files\MitFiles138.exe

Filesize
1.8MB

MD5
09804fcb1250801bc1b972cf332d3e87

SHA1
1a9d8700bf70bba22f2e205be85190aa3bac384c

SHA256
cd1a1565e5982b978418ea27eb572c157a0bdc896eca5664f8d093610e419645

SHA512
4ac5eb09fce9567329cd91afcedffb101debb369505799278877991a620edfdaefdf8f1ebce73c5c4ca1cd3d2f1f4331dae77eaf93a8e7b1c005c56ee4e710ed

Download Submit
\Users\Admin\AppData\Local\Temp\is-2T0QD.tmp\file.tmp

Filesize
695KB

MD5
415533bb40980951c966665cff9e2fe7

SHA1
fce396c8fa01876dd008f22c8be9a9b706f4aaec

SHA256
f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734

SHA512
3a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae

Download Submit
\Users\Admin\AppData\Local\Temp\is-PACO2.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-PACO2.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-PACO2.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\I7CMsVf.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/628-75-0x0000000000000000-mapping.dmp

Download
memory/828-87-0x0000000000400000-0x000000000047D000-memory.dmp

Filesize
500KB

Download
memory/828-55-0x0000000000400000-0x000000000047D000-memory.dmp

Filesize
500KB

Download
memory/828-68-0x0000000000400000-0x000000000047D000-memory.dmp

Filesize
500KB

Download
memory/828-54-0x0000000075BB1000-0x0000000075BB3000-memory.dmp

Filesize
8KB

Download
memory/936-81-0x00000000035B0000-0x0000000004572000-memory.dmp

Filesize
15.8MB

Download
memory/936-69-0x00000000035B0000-0x0000000004572000-memory.dmp

Filesize
15.8MB

Download
memory/936-58-0x0000000000000000-mapping.dmp

Download
memory/1608-73-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/1608-71-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/1608-70-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/1608-77-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/1608-82-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/1608-83-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/1608-86-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/1608-66-0x0000000000000000-mapping.dmp

Download
memory/1764-85-0x0000000000000000-mapping.dmp

Download
memory/2036-84-0x0000000000000000-mapping.dmp

Download