nymaim | 76b5a3b4fe6ef386d0427c2b163d629009ef7eb4408e56e503328f77445974c4

Analysis

max time kernel
56s
max time network
58s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
12-01-2023 01:46

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General

Target

file.exe
Size

1.2MB
MD5

007e45a7587b3d791ac88737ce8972c8
SHA1

f61699e8abbf0d7ef6f88eefb159ef5671e19d56
SHA256

76b5a3b4fe6ef386d0427c2b163d629009ef7eb4408e56e503328f77445974c4
SHA512

6d1c94eadd3188455b0e2c31c3860fa7e99af4e79922852c6f4485b841be8ed60fdbaba19c172ea36ea5489579928e9f5705599847e4f9a28f41f77e45558a35
SSDEEP

24576:q20IN77i8CfUtm9o2oYSedZ6wFaOOtdJr/QIyv5MgXC75ld1qSVpk:q2d7i8KUao2Se/stfQIyxUd1qapk

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.tmpLitFiles137.exeJfLsB9bFABEVnI.exe

pid	Process
816	file.tmp
948	LitFiles137.exe
1656	JfLsB9bFABEVnI.exe

Loads dropped DLL 6 IoCs

Processes:

file.exefile.tmpLitFiles137.exe

pid	Process
1264	file.exe
816	file.tmp
816	file.tmp
816	file.tmp
816	file.tmp
948	LitFiles137.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

Drops file in Program Files directory 17 IoCs

Processes:

file.tmp

description	ioc	Process
File created	C:\Program Files (x86)\Split Files\language\is-18258.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-P703Q.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-PJCHN.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\unins000.dat	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-LQ57S.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-DQM7B.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\Split Files\LitFiles137.exe	file.tmp
File created	C:\Program Files (x86)\Split Files\is-RN2BS.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-UGTPF.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\is-CBITF.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\is-7UEMG.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\is-2O4JV.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-90E3J.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-75HOF.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-19MQF.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\is-PAJK0.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\Split Files\unins000.dat	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
956	taskkill.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

LitFiles137.exe

pid	Process
948	LitFiles137.exe
948	LitFiles137.exe
948	LitFiles137.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description	pid	Process
Token: SeDebugPrivilege	956	taskkill.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

file.exefile.tmpLitFiles137.execmd.exe

description	pid	Process	procid_target
PID 1264 wrote to memory of 816	1264	file.exe	28
PID 1264 wrote to memory of 816	1264	file.exe	28
PID 1264 wrote to memory of 816	1264	file.exe	28
PID 1264 wrote to memory of 816	1264	file.exe	28
PID 1264 wrote to memory of 816	1264	file.exe	28
PID 1264 wrote to memory of 816	1264	file.exe	28
PID 1264 wrote to memory of 816	1264	file.exe	28
PID 816 wrote to memory of 948	816	file.tmp	29
PID 816 wrote to memory of 948	816	file.tmp	29
PID 816 wrote to memory of 948	816	file.tmp	29
PID 816 wrote to memory of 948	816	file.tmp	29
PID 948 wrote to memory of 1656	948	LitFiles137.exe	30
PID 948 wrote to memory of 1656	948	LitFiles137.exe	30
PID 948 wrote to memory of 1656	948	LitFiles137.exe	30
PID 948 wrote to memory of 1656	948	LitFiles137.exe	30
PID 948 wrote to memory of 1800	948	LitFiles137.exe	33
PID 948 wrote to memory of 1800	948	LitFiles137.exe	33
PID 948 wrote to memory of 1800	948	LitFiles137.exe	33
PID 948 wrote to memory of 1800	948	LitFiles137.exe	33
PID 1800 wrote to memory of 956	1800	cmd.exe	35
PID 1800 wrote to memory of 956	1800	cmd.exe	35
PID 1800 wrote to memory of 956	1800	cmd.exe	35
PID 1800 wrote to memory of 956	1800	cmd.exe	35

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:1264
- C:\Users\Admin\AppData\Local\Temp\is-JQVJ0.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-JQVJ0.tmp\file.tmp" /SL5="$60120,1064270,212992,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:816
- - C:\Program Files (x86)\Split Files\LitFiles137.exe
    "C:\Program Files (x86)\Split Files\LitFiles137.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:948
  - - C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\JfLsB9bFABEVnI.exe
      4⤵
      Executes dropped EXE
      PID:1656
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "LitFiles137.exe" /f & erase "C:\Program Files (x86)\Split Files\LitFiles137.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1800
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "LitFiles137.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:956

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)\Split Files\LitFiles137.exe

Filesize
1.8MB

MD5
849dda6937aa10993f8d279fccfa9965

SHA1
7c2ad5cac25dc9364da3ead8ccbe3c8550a4ab1d

SHA256
7622f4bf46ce2b2bcde7e19f8da5d3af964889e53d788478b437d42270f9d32b

SHA512
7cd015e1c73d676bb03ae95cd81e1807779c3ba81d8de80ad88c8962fcc9fc1986e9a43f91bbf1abb522f72cc96343007fc35b042b093f7f2c82d99b3541acea

Download Submit
C:\Program Files (x86)\Split Files\LitFiles137.exe

Filesize
1.8MB

MD5
849dda6937aa10993f8d279fccfa9965

SHA1
7c2ad5cac25dc9364da3ead8ccbe3c8550a4ab1d

SHA256
7622f4bf46ce2b2bcde7e19f8da5d3af964889e53d788478b437d42270f9d32b

SHA512
7cd015e1c73d676bb03ae95cd81e1807779c3ba81d8de80ad88c8962fcc9fc1986e9a43f91bbf1abb522f72cc96343007fc35b042b093f7f2c82d99b3541acea

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-JQVJ0.tmp\file.tmp

Filesize
695KB

MD5
415533bb40980951c966665cff9e2fe7

SHA1
fce396c8fa01876dd008f22c8be9a9b706f4aaec

SHA256
f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734

SHA512
3a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-JQVJ0.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}\JfLsB9bFABEVnI.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
\Program Files (x86)\Split Files\LitFiles137.exe

Filesize
1.8MB

MD5
849dda6937aa10993f8d279fccfa9965

SHA1
7c2ad5cac25dc9364da3ead8ccbe3c8550a4ab1d

SHA256
7622f4bf46ce2b2bcde7e19f8da5d3af964889e53d788478b437d42270f9d32b

SHA512
7cd015e1c73d676bb03ae95cd81e1807779c3ba81d8de80ad88c8962fcc9fc1986e9a43f91bbf1abb522f72cc96343007fc35b042b093f7f2c82d99b3541acea

Download Submit
\Users\Admin\AppData\Local\Temp\is-C03H3.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-C03H3.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-C03H3.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-JQVJ0.tmp\file.tmp

Filesize
695KB

MD5
415533bb40980951c966665cff9e2fe7

SHA1
fce396c8fa01876dd008f22c8be9a9b706f4aaec

SHA256
f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734

SHA512
3a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae

Download Submit
\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\JfLsB9bFABEVnI.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/816-81-0x0000000003600000-0x00000000045C2000-memory.dmp

Filesize
15.8MB

Download
memory/816-58-0x0000000000000000-mapping.dmp

Download
memory/816-69-0x0000000003600000-0x00000000045C2000-memory.dmp

Filesize
15.8MB

Download
memory/948-77-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/948-82-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/948-73-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/948-66-0x0000000000000000-mapping.dmp

Download
memory/948-85-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/948-70-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/948-71-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/956-84-0x0000000000000000-mapping.dmp

Download
memory/1264-54-0x0000000076711000-0x0000000076713000-memory.dmp

Filesize
8KB

Download
memory/1264-68-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/1264-55-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/1264-87-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/1656-75-0x0000000000000000-mapping.dmp

Download
memory/1800-83-0x0000000000000000-mapping.dmp

Download