nymaim | 572bc3952f40c67490f174ca5f7abf8c6f7b7d67c8306bb2a2c0a3aa76797faf

Analysis

max time kernel
56s
max time network
57s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
11-01-2023 17:34

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General

Target

file.exe
Size

1.4MB
MD5

55758f9d8f43f9f3d90466865558e8f1
SHA1

4af0541b910fe933a4d694cfbbadeb5b201b6e56
SHA256

572bc3952f40c67490f174ca5f7abf8c6f7b7d67c8306bb2a2c0a3aa76797faf
SHA512

716f1eed6dffb79f8ad22bb3ec144342a4b54be4788b29da582d915ff44f42351e3ee042f3060e9b2b5ecd957e95b58b14d86c560c076907ae37e2f114d8f23d
SSDEEP

24576:q20IjVkmcw2VNT/CJvjtreOTe5bbnqprPvaDUdSrKetLnygXC75ld1qSVpk:q2hsV9aRtCJ5berPvAUsxtbWd1qapk

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

pid	Process
2040	file.tmp
1132	LitFiles137.exe
848	OnQdIVhH3CPtEI.exe

Loads dropped DLL 6 IoCs

pid	Process
840	file.exe
2040	file.tmp
2040	file.tmp
2040	file.tmp
2040	file.tmp
1132	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

description	ioc	Process
File created	C:\Program Files (x86)\Split Files\is-L5DBK.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\unins000.dat	file.tmp
File created	C:\Program Files (x86)\Split Files\is-JUTVV.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-UK2FG.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\is-BKS58.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-F0197.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-FGA7N.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-BAGVQ.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-3VQIK.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\is-TC8D2.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-8PM1N.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\is-RDPPP.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\Split Files\unins000.dat	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-7TIQO.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-NPT2M.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-P473O.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

pid	Process
2024	taskkill.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1132	LitFiles137.exe
1132	LitFiles137.exe
1132	LitFiles137.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2024	taskkill.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 840 wrote to memory of 2040	840	file.exe	28
PID 840 wrote to memory of 2040	840	file.exe	28
PID 840 wrote to memory of 2040	840	file.exe	28
PID 840 wrote to memory of 2040	840	file.exe	28
PID 840 wrote to memory of 2040	840	file.exe	28
PID 840 wrote to memory of 2040	840	file.exe	28
PID 840 wrote to memory of 2040	840	file.exe	28
PID 2040 wrote to memory of 1132	2040	file.tmp	29
PID 2040 wrote to memory of 1132	2040	file.tmp	29
PID 2040 wrote to memory of 1132	2040	file.tmp	29
PID 2040 wrote to memory of 1132	2040	file.tmp	29
PID 1132 wrote to memory of 848	1132	LitFiles137.exe	30
PID 1132 wrote to memory of 848	1132	LitFiles137.exe	30
PID 1132 wrote to memory of 848	1132	LitFiles137.exe	30
PID 1132 wrote to memory of 848	1132	LitFiles137.exe	30
PID 1132 wrote to memory of 1768	1132	LitFiles137.exe	33
PID 1132 wrote to memory of 1768	1132	LitFiles137.exe	33
PID 1132 wrote to memory of 1768	1132	LitFiles137.exe	33
PID 1132 wrote to memory of 1768	1132	LitFiles137.exe	33
PID 1768 wrote to memory of 2024	1768	cmd.exe	35
PID 1768 wrote to memory of 2024	1768	cmd.exe	35
PID 1768 wrote to memory of 2024	1768	cmd.exe	35
PID 1768 wrote to memory of 2024	1768	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:840
- C:\Users\Admin\AppData\Local\Temp\is-EMHBS.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-EMHBS.tmp\file.tmp" /SL5="$70122,1247583,212992,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:2040
- - 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:1132
  - - C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\OnQdIVhH3CPtEI.exe
      4⤵
      Executes dropped EXE
      PID:848
  - - 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:1768
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "LitFiles137.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:2024

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
2.0MB

MD5
10a6a587c1d312eb9e2ad8c9fed6dd0b

SHA1
abed10c202f11ddf7f67c22568a2f36aab66f4f7

SHA256
248df31f9f3062033b4295caf68ff12e3a0be8fda716211994116984bba15963

SHA512
19d5154c14918a5073c4cacc916232352d1682e977c8aae94cbe0094fbdbba1bc50bb1a40c51375642d160f2dba7f210e47b717a5d46d5bb34d9fee3523dbece

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

Filesize
2.0MB

MD5
10a6a587c1d312eb9e2ad8c9fed6dd0b

SHA1
abed10c202f11ddf7f67c22568a2f36aab66f4f7

SHA256
248df31f9f3062033b4295caf68ff12e3a0be8fda716211994116984bba15963

SHA512
19d5154c14918a5073c4cacc916232352d1682e977c8aae94cbe0094fbdbba1bc50bb1a40c51375642d160f2dba7f210e47b717a5d46d5bb34d9fee3523dbece

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

Filesize
695KB

MD5
415533bb40980951c966665cff9e2fe7

SHA1
fce396c8fa01876dd008f22c8be9a9b706f4aaec

SHA256
f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734

SHA512
3a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-EMHBS.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}\OnQdIVhH3CPtEI.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

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

Filesize
2.0MB

MD5
10a6a587c1d312eb9e2ad8c9fed6dd0b

SHA1
abed10c202f11ddf7f67c22568a2f36aab66f4f7

SHA256
248df31f9f3062033b4295caf68ff12e3a0be8fda716211994116984bba15963

SHA512
19d5154c14918a5073c4cacc916232352d1682e977c8aae94cbe0094fbdbba1bc50bb1a40c51375642d160f2dba7f210e47b717a5d46d5bb34d9fee3523dbece

Download Submit
\Users\Admin\AppData\Local\Temp\is-5RH1N.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-5RH1N.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-5RH1N.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

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

Filesize
695KB

MD5
415533bb40980951c966665cff9e2fe7

SHA1
fce396c8fa01876dd008f22c8be9a9b706f4aaec

SHA256
f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734

SHA512
3a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae

Download Submit
\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\OnQdIVhH3CPtEI.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/840-87-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/840-55-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/840-68-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/840-54-0x0000000075FF1000-0x0000000075FF3000-memory.dmp

Filesize
8KB

Download
memory/1132-70-0x0000000000400000-0x00000000013F4000-memory.dmp

Filesize
16.0MB

Download
memory/1132-73-0x0000000000400000-0x00000000013F4000-memory.dmp

Filesize
16.0MB

Download
memory/1132-71-0x0000000000400000-0x00000000013F4000-memory.dmp

Filesize
16.0MB

Download
memory/1132-77-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/1132-82-0x0000000000400000-0x00000000013F4000-memory.dmp

Filesize
16.0MB

Download
memory/1132-83-0x0000000000400000-0x00000000013F4000-memory.dmp

Filesize
16.0MB

Download
memory/1132-86-0x0000000000400000-0x00000000013F4000-memory.dmp

Filesize
16.0MB

Download
memory/2040-69-0x0000000003660000-0x0000000004654000-memory.dmp

Filesize
16.0MB

Download
memory/2040-81-0x0000000003660000-0x0000000004654000-memory.dmp

Filesize
16.0MB

Download